Scared. Please help!

Hi ladies!

I am a massive worrier and I'm about 4weeks and 6 days at the moment. All my test are showing strong positives but I am so paranoid about having an ectopic pregnancy. This is my first pregnancy and with endometriosis it puts me at higher risk of having an ectopic. When I told my doctor my concerns yesterday, she didn't really seem bothered but I really want an ultrasound and blood tests to make sure my HCG is doubling. Should I just go to the hospital? Will they do an emergency ultrasound? I don't know what to do. I just can't spend another day worrying myself crazy and over thinking that something bad might happen it's causing me so much stress and anxiety :(