- can sex push back your period? I have unprotected sex all the time and I'm a week and 1 day late. I have no cramps yet very mild ones every now and than but it was maybe 2 days and my boobs hurt like normal before a period than last month I was 2 weeks late but it was normal. I don't have any signs of pregnancy besides the late period and my cycle is normal except these last 2 months. Could I be having something else wrong ? Im starting to get very worried.

Sex can definitely push back your period, especially with no protection and ejaculation, especially for a whole nine months. I think you should do an HPT now with first morning urine. It is about the right time to test, two months late.