Scared I've made a mistake

I bought 2.5mg of mounjaro via an online pharmacy and I'm a little worried about side effects and what to expect. I've done my research, but the little voice at the back of my head has taken over. What has people's experiences been like?

For context I'm a size 12- 14, 12st 7 and 5ft4 so I qualified as my BMI showed I was overweight. I had a PT for just under a year twice per week and I only lost 5lbs. So I find it difficult to shift the lumber and my self esteem is rock bottom.

I'm hoping to lose about 2 stone in total and I want to take my journey slowly while incorporating lifestyle changes, eating healthy etc. Which I think is what you're supposed to do anyway.

Has anyone started off at a similar size/weight to me? How quickly did the weight come off? Did it work or did you find you needed to increaze your dose after 4 weeks?

Lol I'm a ball of nerves - help!