I just had my son five months ago and I'm pretty sure I'm pregnant again. I've been so nauseas the last few days like I was with my son. My period is 5 days late but I've heard that can happen with the second post pregnancy period. I haven't gotten a positive pregnancy test but I feel so sick I have to be pregnant. We use condoms as birth control. So I guess my real question is has anyone had an unbroken condom lead to pregnancy?