Question about Zoloft after Bypass

Hello All,

I had my bypass on Valentines Day this year. So, I'm roughly 4 months post op. Prior to my surgery I was taking Wellbutrin 100mg 3 times a day. I haven't had any weight gaining issues with this medication. It actually had been helping me not want to overeat a bunch. Recently my Dr decided to add Zoloft 50mg daily in addition to my Wellbutrin. I haven't started taking it yet because I am having mixed feelings about it. I know I need something to help with the irritability I've had an increase within addition to what I am taking now. I do trust my Dr and him saying that he thinks that I am a good candidate for the medication, and he hasn't seen any weight issues ect, I am though however terrified if I start taking this medicine, I will start gaining weight back. So, my question is those who have been on this medication, did you have any side effects and or weight gain with this medication? And if so, how much weight did it cause you to gain back?