I Had Sex A Day After My Menstrual Period And

I had sex a day after my menstrual period and took morning pills for precautions. Two days later I again had sex and took postinor 2 because I don't want to get pregnant. After a few days I began spotting and then my period calendar showed am starting to ovulate. So am a bit worried I may ovulate and since the drug works for 5 days but a sperm works for up to 7 days. Am a bit scared I might get pregnant and how many times can a woman ovulate in a one cycle and anyway is there anything I should be worried about