gaining weight on my antidepressant :(

Which antidepressant are you on?

I had a close family member that had this issue. Ultimately, you have to live with it until your doc decides to change.

Try a different medication

I had the exact same thing but mine was from a migraine medication. I was about 125/130 and went up to almost 160 in about a month. To me the weight gain is so unhealthy and I struggled for a long time. I consulted with my doctors and did trial and error to find another medication. Its really tough to handle the weight gain when you really don't have other options. I would say for now put yourself on a good healthy diet and start exercising. If you can consult with your doctor to try different medications. If you can't do that and need to stay on that one is talk to a nutritionist and try to loose weight with help. Good luck.