As I was leaving work today I went to the bathroom and noticed a small amount, but definitely there, of red blood. Nothing more. I panicked and called the dr. The dr on call said that since I've had just the mildest of cramps and a tiny bit of spotting that it was probably from sex 2-3 days ago and that I should be fine. That I should withstand from sex until the second trimester (I'm 13w1day). If the cramping or bleeding picks up to head to the ER. I feel fine and haven't had any more bleeding other than what was on my underwear but I am FREAKED OUT.