How can I stop worrying if I’m pregnant

I’m on the pill and started my placebo Monday night. Tonight is my third night of now taking the pill and no period in sight yet. I had some very very light spotting (like 1 drop of blood) yesterday. SO NERVOUS because I screwed up with my pills the first week I took them (missed 2 in a row) and just skipped over them because I thought that was the right precaution then figured out too late it wasn’t so basically I wasn’t protected. I didn’t have any vaginal/penis sex but I did get fingered, 69, oral, but we’re like 99% sure no sperm or semen got in me. My breasts have been sore, I’ve been having headaches, minor cramps. NERVOUS