Pregnant or paranoid??

My boyfriend and I had sex 3 days into my period. We normally use the pullout method and we were this time, but he and I both think he might’ve ejaculated a little as he was pulling out. We were both a little startled about this at the time, but didn’t start worrying about it until about two weeks after when I started feeling strange. My stomach has had an annoying, but not painful, feeling for about a week now and I’ve had similar symptoms of what normally comes before my period such as gas and bloating. I haven’t had my period yet, but it isn’t supposed to come for about another week. I thought I might just be paranoid. I took several online tests asking about signs of pregnancy, but I always got “not likely.” I also have not taken a pregnancy test because I am 16 and my parents are strict, and would kill me if they found out I’ve had sex, or worse like having a baby on the way. I don’t want to be a disappointment and I am not ready to have a kid... what do you think, am I pregnant or paranoid?😥

Also, my best friend and I plan on hanging out this weekend to get a pregnancy test