So I am not on any birth control, I normally have my period monthly at the exact same time usually starts the 6th and ends at about 11th. Last month(Dec), I had unprotected sex a numerous amount of times. Every time, he “pulled out.” As of today, Jan 13, I’m a week late on my period. On Tuesday, I went to the bathroom and wiped and there was brown blood on there. So I thought to myself “hey I started my period!” However, I have not bled since then. No more spotting. Some days I wake up in the middle of the night and I’m nauseated, either just feeling like I’m fixing to throw up or actually getting up and throwing up. I’m exhausted too. I took a first response and clear blue test on Thursday but both said negative. However, still no period. I feel as if I am pregnant just because this never happens and I’m NEVER late. But I don’t know if it is all in my head. What do you think?