Scared and sad

I’m really nervous this is my first pregnancy and I’m only 4 weeks 4 days. I keep feeling twinges of pain (cramps) around my uterus they’re mostly light cramps but sometimes I do get mild ones and I’m really scared I was paranoid before I got pregnant and I feel like I’m going to drive myself crazy wondering if everything’s okay I just want to cry . I have my confirmation on Monday but my actual doctor isn’t able to see me until next week do you think they’ll be able to do an ultrasound. Part of me just wants to go to the ER to check everything out I am nervous I don’t know how I’m supposed to feel cause I haven’t been pregnant before.