Stressed and need some relief

Long story short me and my bf has sex in November and I got a big pregnancy scared, since then I took a test which showed negative and got my full period.... but for some reason I’m stilll stressing about it ( all me and my bf do is like fingering and etc....... and he never fingers me wjth sperm on his fingers). Currently waiting for my next period in 9 days. I just think I’m overthinking it. Also my pants feel a lil tighter and idk I’m just overall stressing out. Even tho I know it’s impossibile pls I need some relief