So girls, I'm in my fertile window and earlier I had a sharp pain in my lower abdomen that lasted a few minutes but then went away. Just now I went to the restroom and there was a bit of light red blood... CM is egg white kinda medium/heavy... (Btw, I got fingered earlier so I'm not sure if that has anything to do... Oh and I haven't had sex since July) HELP :( I've never had this before...