Hello, I Have A Quick Question.. Me And My Boyfriend

Hello, I have a quick question.. me and my boyfriend had sex on July 11 and I took plan b the next day. Then had sex again on July 14 and took the pill the day after. He didn’t cum in me, but I was just being paranoid and took the pill either way. Two days later I spotted twice in one day but no period, and also thick yellowish discharge. Should I be worried about being pregnant?