Confused 😵‍💫

I am 5w6d pregnant. I started with spotting on 5/29. I also started having right sided pelvic pain that was increasing to the point I was lightheaded and nauseous. OB recommended ER to rule out ectopic. My Hcg was 901 progesterone 22.3. Transvaginal ultrasound said “no intrauterine pregnancy seen at this time. Cannot rule out ectopic” OB had me go back for repeat labs today and my HCG is 1819. I go for an appointment on Monday and I’m hoping they repeat an ultrasound. My pelvic and stomach pain is still present as well as the spotting. It got so bad I couldn’t even stand upright. At the ER, he made it sound hopeful if my HCG doubled. I just don’t understand how this pain I’ve been having could be “normal.” The pain has improved but is still there.