IUD&Weight Gain

Hey! So I got the IUD about 6 months ago. I was on the patch before that for about 4 years. I decided to switch because I had become sexually active and wanted something I knew I could never mess up. When I was on the patch I had hardly any acne, normal hair growth, regular periods, normal everything! But now that I'm using the IUD everything us out of whack. I don't have my period (obviously), my sex drive is non exsistent, my acne has flared backed up, and worst of all I gained 30 pounds! I have done everything! I even got a personal trainer. I workout 5 days a week, eat 1500 calories a day, and ONLY drink water but I just keep gaining.

Is this normal? Like have other women had this problem as well?

I'm scared to get it taken out. I know they say it doesn't hurt but I also got told that for the insertion and the pain was so bad I passed out. So I really don't know what to do...I'm just very confused.