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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Will I be slim in 3 months

101 replies

Iusedtobelieveinunicorns · 06/06/2026 17:31

Starting the injection on the 15th of this month, due to go away the first week of September
I’m going with an endocrinologist monitoring it and following progress etc

OP posts:
PrueRamsay · 06/06/2026 17:31

How much do you weigh? What’s your BMI? How old are you?

DustyMaiden · 06/06/2026 17:31

Slimmer

Iusedtobelieveinunicorns · 06/06/2026 17:33

PrueRamsay · 06/06/2026 17:31

How much do you weigh? What’s your BMI? How old are you?

48, 29

OP posts:
youalright · 06/06/2026 17:33

Depends how much you weigh now. You won't go from 20 stone to 8 stone in 3 months

Crunchymum · 06/06/2026 17:33

Starting what injections?

Mounjaro? Wegovy?

How much weight do you want / need to lose?

I assume given this is being done under an endocrinologist you have diabetes? (Or some other underlying condition)

Iusedtobelieveinunicorns · 06/06/2026 17:33

youalright · 06/06/2026 17:33

Depends how much you weigh now. You won't go from 20 stone to 8 stone in 3 months

Around 13

OP posts:
VividDeer · 06/06/2026 17:34

Be realistic!

Am99 · 06/06/2026 17:34

Iusedtobelieveinunicorns · 06/06/2026 17:31

Starting the injection on the 15th of this month, due to go away the first week of September
I’m going with an endocrinologist monitoring it and following progress etc

I think it’s doable! I gained 20kg in pregnancy and now 3 months I’m only a few kg above pre pregnancy weight and I haven’t really exercised! So I say it’s not impossible at all especially with injection

youalright · 06/06/2026 17:34

Iusedtobelieveinunicorns · 06/06/2026 17:33

Around 13

I would say you could get to about 11 stone by September

Boomer55 · 06/06/2026 17:35

Iusedtobelieveinunicorns · 06/06/2026 17:31

Starting the injection on the 15th of this month, due to go away the first week of September
I’m going with an endocrinologist monitoring it and following progress etc

I don’t think it works that quickly.

FridayOnMyMind · 06/06/2026 17:35

Yes.

Irrespective of your starting weight, diet, exercise, medical conditions age or lifestyle you will have a BMI of 18 by September and a size eight in Zara clothes.

I’m basing this on a friend of mine who went from a size 10 to a size 8 in three months while training for a triathlon.

VividDeer · 06/06/2026 17:35

Your bmi is not 48? I'm confused

Larrythecatforpm · 06/06/2026 17:36

You’ll be slimmer, not slim. Be realistic you still need to put the work in.

Crunchymum · 06/06/2026 17:36

VividDeer · 06/06/2026 17:35

Your bmi is not 48? I'm confused

I assume poster is aged 48 and her BMI is 29?

ItsOnlyHobnobs · 06/06/2026 17:36

When posting, it’s useful if you flesh your communication out a little.

Are you 48 years old with a bmi of 29?

If you are sticking to a calorie deficit I would expect to be losing around 1 or 2 lbs a week.

youalright · 06/06/2026 17:37

youalright · 06/06/2026 17:34

I would say you could get to about 11 stone by September

Just to add I've never used on injections this is what i can lose in 3 months with strict dieting. I don't know how the injections work

FridayOnMyMind · 06/06/2026 17:37

Iusedtobelieveinunicorns · 06/06/2026 17:33

48, 29

Oh, then no, you won’t be.

VickyEadie · 06/06/2026 17:37

Must be a private endocrinologist if your BMI is 29?

youalright · 06/06/2026 17:38

Are you 2ft tall

Getmystuffsorted · 06/06/2026 17:38

Good luck

Iusedtobelieveinunicorns · 06/06/2026 17:41

VividDeer · 06/06/2026 17:35

Your bmi is not 48? I'm confused

My age is 48, bmi 28/29

OP posts:
Ponoka7 · 06/06/2026 17:41

You could be 1 to 1.5 stone lighter. To protect your bones and muscle mass you need to exercise. The WLI just stops hunger/addiction. The rest is the method that people deny, eat less/move more, that's working. Or don't move, but that stores up health issues.

VividDeer · 06/06/2026 17:42

Iusedtobelieveinunicorns · 06/06/2026 17:41

My age is 48, bmi 28/29

Similar to me when I started and age
I've lost 1 stone 5lbs in 5 months, part of the time was on wegovy.

Iusedtobelieveinunicorns · 06/06/2026 17:43

VickyEadie · 06/06/2026 17:37

Must be a private endocrinologist if your BMI is 29?

Yes it is, I have pcos, endo, issues blood sugar etc

OP posts:
Iusedtobelieveinunicorns · 06/06/2026 17:43

youalright · 06/06/2026 17:38

Are you 2ft tall

What do you mean?

OP posts:
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