Ok so I got of the Mirena IUD on the 24 of sep I was on the iud for 7 mnths. I started a period the 25 of sep. Then I started taking Avenia BC pills on the 26 a Sunday. Well I kept bleeding my period till the 29th. Then during oct I forgot to take my birth controls pils 3 times and 2 times for 3 days. Then my boyfriend and I had unprotected sex on the 11th and a cam inside me and we even kind of fell asleep after. So when it came time to take the white sugar pills that you are suppose to start your period with, I took 2 and stopped cause I thought I might be prego. Well I never got my period and that was suppossed to start on the 18th and never did. The doctor said ok if by the 23 you haven't started take a test. Well I did a few actually and they all said negative. Well here we r sametime last month I had a actually period and nothing. Its the 29 almost the end of the month and no period. I know we also had unprotected sex 2 more times. What should I do. I have 2 kids already and I fell as if I'm prego. I woke up the other night and thought I was going to throwup and wanted lots of water.my breast are also a lil tender and a few days ago I had this sharp pain in my uterus for maybe like 5 mins and then it went away and hasn't coming back since. I'm confused.