You'd have to talk to whoever prescribed it Caramme. I'm not a medic.
However, I do know quite a bit about diabetes and the medications prescribed. I was diagnosed as T2 diabetic over 30 years ago and I think I've tried most of the medications available and experienced all sorts of side effects over the years.
I had a friend who was prescribed Byetta, which acts in a similar way to Semaglutide. It worked well for her, her BG levels came down and she lost weight. The improved BG levels could, of course, have been the result of the weight loss.
Anyway, I asked my own GP about Byetta, but was told I wasn't eligible for it because I wasn't overweight. I did a bit of Googling and, having read about the side effects, I was quite relieved that it wasn't prescribed. It would appear that nausea is a relatively common side effect.
I've read a bit about Semaglutide and wasn't impressed either. For me, the only way I can keep my BG levels down is to follow quite a strict low carb diet and move around frequently. I test my plasma BG frequently and know how various foods affect me.
I don't know that much about Semaglutide and weight loss because I don't have to lose weight. The link I posted above seems quite balanced. My personal (non medic) opinion of it is that it's not a magic potion and people are going to have to follow a diet and some kind of exercise regime anyway. In which case, the diet and exercise might just be enough to lose weight.