Hello, I am a 21 year old female and I have had an IUD since April 2013. I recently noticed that I have been having heart burn, constipated, diarrhea, a little more emotionally sensitive then usual, belching uncontrollably, and my breasts are a bit tender when I push on them. I believe it's been a month since I have last had my period, but I'm not exactly sure. I need advice on what I should do.