So on the 9th my period had ended and then because I thought my fertile window doesn't start till the 21st me my boyfriend had unprotected sex on the 10th so the day after my period finished. And then for the past 5 days I have been cramping, and now today I can noticed thick, clear and very stretchy discharge, is there a possiblity of pregnancy? I am 6 months pp if that has any relevant.