Could I be pregnant?

My boyfriend and I tried anal, but we did it with no condom, and I’m afraid that his Precum may have cum into contact with my vagina. This might be dumb but I’m experiencing all symptoms, but I also know that these are very similar to period symptoms. Nothing ever went into the vagina, but I’m still very concerned.

I’ve been experiencing hot flashes, morning sickness, tender breasts, nausea, mood swings, vomiting, peeing a lot. I’m just nervous af.

But I also read that if my cervix is still hard then I’m likely fine, and it is.

Can someone tell me the chances of this to calm me down? I’m only seventeen and I’m in absolute panic over this.

Should I be so concerned?