My period has been irregular since I first started having them so it's kind of hard for me to tell exactly when I'm ovulating aside from the changes in discharge & temperature... Anyhow, my boyfriend & I had unprotected sex on December 12th, 18th & 19th and on December 28th my nipples started to feel so tingly that they felt like they were on fire!! Then yesterday (December 29th) I went to the bathroom and saw some blood when I wiped..there weren't any clots or anything & it was a very small amount... about the size of a quarter. So I thought my period was about to start but since yesterday I haven't bled at all. My lower back started hurting last nite & I found myself running to the bathroom at least once per hour. Today my nipples still feel as if they are on fire, but it's no where as often as it was yesterday or the day before. So this kind of confuses me! & seeing that my period is irregular I've decided to wait a week to test, hopefully giving my urine time to have enough HCG in it to be detected. Please give me feedback anybody!! I'm a bit confused/excited/worried...