I have pretty irregular periods. I usually start around the 25, but skip a minth now and again. I'm never early though. The past few months have all been right around the 25. I had sex 2 days ago and today I started spotting a light pink color. I have never had this happen befor. I've only been with my husband and he has not been with anyone else for the past 3 years. I know it's possible but how likely do you think it is that I'm pregnant? I havn't had any other symtoms, other than a little moody.