nervous about being pregnant

i had sex on september 16 but it was messy/we were both drunk (please don’t judge). i’m on the pill and he wore a condom but got soft halfway through so we had some complications. i’ve had two periods (withdrawal bleeds) since but i’ve gained some weight, had an increased appetite, breaking out, and had sore stomach a few weeks ago. at this point i would be 10 weeks and 4 days. would i know if i was pregnant? i’m sorry if this sounds stupid i’m just nervous.