I'm currently 37wks and I had mine for 5 yrs before getting pregnant. I had my period every month even though the doctor said I wouldn't. I didn't gain weight but my husband told me he felt it when we had sex. I'm getting it again because I think its the best birth control.
I personally hated it! Extremely painful going in, bled lightly for an entire year, and painful during sex:( this being said, I have friends who have had it and love it, so I guess it depends on the person. Just do lots of research :) good luck!
I had it for about two years and loved it everyone always bashes it but my experience was great no pregnancy scared no period didn't gain weight I loved it and will probably get it after this pregnancy