Birth control. My period to start again!

Ok so my period came on march 18 i was supposed to start my tri sprintec bc when it it did but i forgot so i started on the second week and i started on a monday so i took 2 pills one for sunday and monday pills both on monday , and i took a pill tuesday"total of 3 pills and lost the pack , now to remind u this was all within my fertile week my ovulation date was 03/31 i had intercourse on the 29th of march , by me stopping the pill i had breakthrough bleeding on april 2nd to the 5th of april. im just curious to know if i could be pregnant or did the breakthrough bleeding prevent that / it was heavy at all it was light so was that not a period...? i have been feelin so nasuea and my breasts are sore i just want to lay around all day and have been very very moody and crampin its been past 31 days for my period to start again