Bowl cancer? Something else ? Worried about weight loss

[imanewuser]

I'm 50, female. Spent 6 weeks dieting and exercising back in Feb/March. Lost around 6lbs. Never done so well before. Then lost my way. Since then I've had a terrible diet. Still no booze but also no exercise (had been doing 5k several times a week), no real meals just a mouthful of DC left over dinner here and there, mcds brekky sometimes,mcds in the eve here and there, bags of sweets here and there, filling up on bread (one day I had 4 pan au chocolate in one day). Somedats v little food, some days a lot. Very varied. And ive still lost weight. My stools are bigger lately and sometimes harder to push out due to size.they have been big like this for a year now. Doc wasnt worried. Blood once, bright red and that was the time I had to put my finger up there to help get the poo out. Last few days some v mild lower back pain on right side. Also on and off some v mild pain right side abdomen just away from belly button. I've had IBS for years. Im really worried about the weight loss. I ate a sharer packet of jelly sweets last night and malteaser sharer to myself. On top of mcds breakfast the same day. And I'm still losing weight ? I'm down 10lbs now and in the next stone bracket.
Should I be worried ?

Are you sure you're not actually eating less calories though?

Sounds like you're not eating proper meals at all, hence no fibre which is causing constipation. The sensible approach would be to get yourself back on an even keel and eat three proper nutritional meals a day, see how that goes for a while.

@dogglebox ty for your reply. I'm not eating any proper meals. Lost my way with it all. Yesterday I had mcds breakfast, large chocolate bar for lunch with a ham sandwich, dinner was the jelly sweets and more chocolate.
yes, maybe I need to have proper meals again and monitor from there. I'm away for a week tomorrow on holiday. Will pick up a proper meal plan when I get back

Have you done a FIT test? You can buy them from Boots, Lloyds etc. for about £15.

If it's positive, don't panic. Could be hemorrhoids or something equally harmless (needs to be checked by a GP).

You might just not be eating that many calories. When I'm very stressed I often unintentionally undereat and lose weight.

I think it's easy to assume you're eating a lot of calories because you're eating junk, but if you're not eating a main meal you may still be in calorie deficit.

Fill in a food diary for two weeks to see if if you are in calorie deficit. Obviously also weigh yourself at start and finish to compare.
Also if you want to improve your stools, you need to be drinking more water, eating fruit and veg and eating regular healthy meals.