Would i still be able to get pregnant while im on the IUD ? 😐

Hey guys so i have an IUD and ive had it for a year and some change now, but lately ive been a little worried because ive been having weird pains in my uterus and ive had fluid coming down and i just recently got off of my period about two weeks ago and ever since then ive been having unprotected sex with my boyfriend. 
Can anyone with an IUD or thats a doctor, has had experience please give me an idea of whats going on ?