To be worried about my weight loss?

But op that was in clothes ? Coat, shoes?

It’s about 7lbs in the last few weeks then? In all honesty I’m also hover around 13st and can fluctuate by 7lbs (up or down) in a week. Obviously talk to the doctor and make your anxieties known but I wouldn’t assume the worst.

P.s A 28 hr fast will cause some weight loss.

Stress, breastfeeding and two small chn sound like a likely reason. If I’m stressed I find it hard to eat much plus it makes me go to the loo all the time so probable weight loss and that’s without breastfeeding g and little chn So far all tests are normal. Try to get some time to do some breathing and calming exercises. Reassure yourself that you are getting g checked out, you are being brave and not ignoring it. You can do no more.

I'm afraid I really don't believe you work in medicine or at least not in a trained job.

I'm glad you're colonoscopy and gastroscopy have shown nothing serious That is a huge positive.
Don't underestimate the effect of stress on your body
I lost a stone without trying during a break up for example.
The prep for the procedures would account for some plus the limited diet for the few days beforehand.
Breastfeeding uses calories by itself so if you consider all those factors, I think try hard to relax for now.
I'm not medically trained just looking at the situation as an outsider.
Don't force yourself to eat, but try to eat regularly even if smaller amounts.

It is also true that the less you eat your stomach shrinks and you naturally eat less.

You may also be eating less calories if you change say chocolate brands as some have less calories.

You've lost maybe 1lb a week, which if you were aiming for the suggestion would be you need to drop about 500 calories a day. By coincidence (maybe?) breastfeeding is supposed to burn about 500 - 700 calories a day.

You also need to consider that weight can fluctuate quite a bit, especially for women. At different times during the month depending on hormones you might find you retain a bit more water and weigh a 1lb or 2 more, even weighing morning or night can change things (and if you're not naked consider what you're wearing). So you may not have lost as much as you think. Stress won't help.

It might be worth trying to keep a record for a couple of weeks of what you are eating and drinking so you can see what your calorie intake actually is which will help you work out if you "should" be losing weight.

And please try and remember there are many many reasons for weight loss and the majority of them are not something awful.

You have several factors at play here: you are extremely anxious and will be using calories and energy on this, you are breastfeeding round the clock and you have two very small and presumably active children.

The two scopes will mean you were cleared out which will cause quite a weight fluctuation. How do you know your relatives’s scales are accurate and also are you weighing yourself naked at the same time each time? Doubtful.

Obviously talk to your doctors again and listen to them. They are taking you seriously but this seems to be feeding your anxiety. With absolute respect you are still far from underweight. If they reassure you and this is your only symptom ( unexplained) then please try to eat sensibly and put it to the back of your mind. Our weight does fluctuate at different times of life.

My friend started dropping weight some years ago and had many tests and examinations.

It took months before they found it was a parasite that she had picked up in Turkey from eating an undercooked sausage.

I can't remember the treatment it was tablets I recall.

You’re only talking 13 down to 12.5, since you don’t remember when you weighed 13.7. So 7 pounds, which is easily attributed to the colonoscopy process that clears your system out and requires you to fast. I really think you should stop weighing yourself and stressing over normal fluctuations. Do you have health anxiety?

I remember losing quite a lot when running round after 2 pre schoolers while still breastfeeding.

Colonoscopy can mimic quite a weight loss. I remember MIL being worried but her weight levelled off again within a month or so.

Also echo pp about it not being dramatic - my neighbour lost nearly 3 stone in 4 months, after investigations he was found to have coeliacs. He went from being a slim built 12 stone to being skeletal.

The colonoscopy prep will have shifted several extra pounds, you had to restict your food intake, then you lose a lot of water (& the entire contents of your gut!)

Are you definitely eating enough for your activity level, stress level and taking into account the BF? Your body will prioritise putting energy into BM so if you are in a calorie deficit you will lose weight.

Are you weighing yourself on the same set of scales each time? As different scales in different places can give quite different readings.

I think if you’re stressed out, breastfeeding and running round after young children, losing a stone in 4 months would be easily done without trying.

What are you eating in a day, how many calories?

I lost a lot of weight when breastfeeding too.