My boyfriend and I had sex twice on day 18 of my cycle, which was one of my highest chances of preg (like 30%). The first time, he just played with me from the outside, did not cum in me, and finished himself. The second time, he did play inside me some and sometimes out. He did not finish in me though and said he was far from cumming. Both times he did not wear a condom. That was Saturday night, on Monday around 10 AM I took a plan b. I have seen some discharge, that looks just like the discharge before my period/during ovulation after I took the pill, just on like two days. Should I be worried?