Should j be worried? Please help me

Today is day 29 and still no period.. I have had cycles from anything like 26-29, and one  30 day cycle. I had sex few times this month but with condom and they didn't break, we did the water test after. I had anal sex once and he cam inside me, and I wiped shortly after.. I thouht I felt pms symptoms yesterday but still no bleeding. I was a little stress at the beginning of the week, but i don't know what's going on. Any insight would help, or if I should just wait it out. Getting birth control after this period.