I might be pregnant & I'm goddamn terrified

Throwaway because if I'm going to get shit on for this, it's best to isolate the damage.

TL;DR: Just the title

Longer version: My cycle is now a full week late (too early to confirm with a basic test if I'm pregnant, too late for the morning after pill), the only gyno who takes my insurance is not returning my calls for an appointment, & yes I used protection (copper IUD & condoms with spermicide) but as a tokophobe, I'm not convinced for even a second that they didn't just decide to fail & fuck me over in the most statistically impossible way ever. It would not be the first time my body pulled a stunt like that.

I can't sleep without having nighmares, I can't eat without feeling like I'll be sick, I start shaking randomly & I'm having trouble breathing, & yes, YES, I know it might be nothing, & that I could be fine, & maybe I'm over-reacting, but at the same time maybe I'm not & I fucking hate this fear. I hate being "too young" to know that I don't ever want children. I hate being female & having to deal with this.

Suggestions on where to go/what to do would be helpful. Any info on how to stay calm would, too. I'm at work right now & just trying to keep my shit together until I can go home & cry.