Pregnancy while on the pill ?

Hey so I had sex Sunday two weeks ago. It was the last day of my first month on the pill. We used on condom and I’m not sure he came inside me and I’m probably just having a crazy panic attack. I had my « period » but as it is artificial I guess it doesn’t mean anything. The days after the intercourse (like right after) I was super tired but it could be explained by the fact that I am stressed and had to catch up on sleep. Also I’ve been having little chest pains but had them before so... well I’m probably just thinking too much but should I take a pregnancy test just to be sure ?