why did I not have my periods even after having protected sex?

Me and my boyfriend had protected sex for the first time on 1/21 .I usallyy get my period during that week.but it hasnt came ...

after sex does it make your period heavier or does it stay the same.

For the past month,everytime I have sex I start bleeding 2 days after...what could this be?

About how many days should I wait to have sex..after my period.? I'm on birth control too!

can you get pregnant the very first time you have sex with your period even if you didnt know you was gon get it yet. it was...

Well, I was wonderinqq can yu catch somethinqq by havinqq protectedd sex because my friend said that after she had sex her v...

I had sex on june 10th and my period came on june 6th and see I had sex while my period was on and my sex partner had use two...

If you have protected sex (with the proper use of a condom),within the time period in which your period will not start, is it...

If you have sex, does your period lag it a bit? And also, does your period come a week sooner every month?? So say that you ...

me and my boyfriend had sex whill me being on my period. can you get pregnant if you have sex on your period? please help!