Pregnant after Mirena?

Ok almost a month ago, my mirena fell out. I bled like the day after for a few days. I think that was my period I have had unprotected sex this past month after it fell out. my period, if that three day thing was my period, should be in like a week. I have been feeling queasy, cramps ( i never got cramps before) tired latley, want to eat more than usual, pee more frequantly ( not every ten min. but more often than before), back hurts, wierd cramp pains in vagina area. I have a 7 month old, and am 22 years old. I would like to know if anyone has experienced this, or if you have some nice input. please dont tell me to just go to the doctors. I want to wait till if I have a missed period, than take an hpt. i just wanted to get some answers from people on what they think before than. thank you.