Dumb 18 year old curious if shes pregnant 🤦🏻‍♀️

Okay so I’ve been having sex with this guy and its been protected every time so far. About two weeks ago we had sex, and he wore a condom except he waited to put it on until right before he finished. Usually this is fine and I haven’t had any issue in the past and in the moment it didn’t seem like the condom had broke. I didn’t realize until a few days later that the day we had sex was my first day of ovulation. My periods are ALWAYS regular so I would assume that my ovulation span would be as well. Part of the reason I didn’t realize if I was ovulating was because I didn’t have the clear slippery discharge you normally get while ovulating. I still have a few days until I’m supposed to get my period, however the past like 3 days I’ve had a constant migraine my breasts have been tender and I’ve been dizzy with random cramps. Normally I don’t feel like this until the first day of my period. So I can’t decide what the situation would be and if any one else has ever been in the same boat as me. I’m not on birth control and I really don’t want to sit and stress myself out and I feel like I’m just making myself more paranoid. I would appreciate any and all feedback!