do everything and still terrified

I'm terrified. My biggest fear is getting pregnant because I'm currently in school and concentrating on my career. My bf and I are always safe. So my fertile window was from the 12-18th. I ovulated last Tuesday on the 16th because it was considered day 14. We had no sex on the day I ovulated. The last time we had sex was the 18th which was Thursday. To be safe my boyfriend and I used a condom, he didn't come in me and to be extra safe we used spermicide. I inserted the spermicide and waited ten minutes after to have sex. I checked the condom and it didn't break. An hour later we had sex again. I inserted another one because the box said after an hour it wears off. Again we waited ten minutes after insertion and had sex. Same thing, condom and not coming in. I forgot to check the condom that time. Now I'm kinda freaking out. Since then I've been checking for signs like implantation bleeding. Every time I go to the bathroom I check for blood. Or I finger myself to check for blood. I know bleeding happens about 6-12 days after ovulation. I haven't seen any bleeding so far. Today while I fingered myself I saw a tiny bit of blood and freaked out. Today would be the last day for any bleeding.I feel maybe it's from fingering myself too much. But I'm terrified... please help. We're so safe and I'm terrified