Pregnancy scare. Chances of preganancy.

Me and my boyfriend did not have sex...but had a heavy make out session...where we removed our upper body clothes but our pants and underwear was still on....we were dry humping and our gentiles were rubbing....for 5-10 mins...we were dry humping and rubbing gentiles in our underwear only....and my boyfriend's penis was partly out of his underwear...when we were doing this...we were doing this in doggy style and missionary and my back was faced to him......I don't and know if he cummed...he said he did not...neither did I....after making out I peed and washed off my vaginal area.....after some time we made out again and were making out with our pants and underwear on....I am in my ovulation phase...my ovulation is due in a day or two....I tool an I pill after an hour of doing this....what are the chances of preganancy.