I have had mine for about 10mos I believe. I have had no weight gain at all although from research I have seen others who said they did gain. My OB said it was possible but not likely. When I first got it I did have light bleeding for about 6 weeks of and on. That to me was the worse part! I had a period or two after that but since then I do not have a period and from what I hear this is very normal. I just check the placement of the string and I guess am confident I am never pregnant...LOL I do cramp a bit so know when it is my period time though. I think I had my placed in September also....jeeze I can't remember!