My periods have always been iffy, sometimes i have one, other times i dont for about 5 months, so i cant really go on that soley.

About 2 weeks ago my boyfriend and I had sex, and he ejaculated inside of me. The next two nights, he pulled out. ( Still worried about the pre ejaculation )

Anyhow I woke up this morning, my breast are sore, my lower back is killing me, i have a major case of heartburn and a horrible headache. Also through out this time, I have had spotting, not bleeding though. It isnt like a period. Just spotting,which usually only happens at night.

I am wondering if it sounds like I could be. Ive read that you need to wait untill atleast a day after a missed period to take a HPT, but, if your periods are like mine, would it be alright to go ahead andtake one, and hope that it is accurate?