Okay I need HONEST birth control advice!! Here is a little history, I suffer with PCOS and have…

Okay I need HONEST birth control advice!! Here is a little history, I suffer with PCOS and have since I was 16 I used to get really bad excruciatingly painful cyst so my OB put me on birth control pill as a teenager to help and I stopped having the cyst. I stopped taking them for some reason or another after a while do to my body rejecting the pills. Then i got with my boyfriend 5 years ago and after a while we wanna a baby but I was having trouble getting pregnant right away so i got back on bc to try to track and regulate my period to help get preganant. Then of course i got off after a few months and got pregnant but we had 4 miscarriages before we had a successful 2 pregnancies. Fast forward to now. I had my daughter 9 almost 10 months ago (my second daughter I had to babies back to back 2016, 2017) the first 4 months I decided to try birth control again although I was scared I had numorus complications with different bc pills but I tried and regret getting back on them. During those first 4 months I gained some wait and had liver problems which had to be from the bc cause I was fine before I started the pill. It seems everytime i take the pills my body rejects it badly. I've been strictly against any other form of bc cause I don't have control over it. Like getting something put in my body does not work for ME! I could not even imagine doing that to my self. And I was against the shot cause I always heard you gain massive weight. But I've recently heard 2 people I know say they take the bc shot and they have actually lose lots of weight since getting it and it helps there period or stops it. But I'm trying to get my self together and lose weight so I'm scared if I take a chance with the shot I'll gain more weight and be even more miserable or I'll have a bad reaction and they won't be able to do anything to stop it since it was a shot and not a pill. So I need any advice you could give my about the bc shot good or bad.