I got this inserted about a month ago. The doctor did not put it in during the time frame which is about 3 days before you period. He told me to wait untill the 22nd and my boyfriend and I had unprotected sex on the 25th. I was on my period when we did. I have been on my period ever since then and its been about three weeks. Its near the end though. I have been experiencing extreme pains and i always feel like i have to throw up. Is it possible i'm pregnant?