Corpus cyst or pregnancy?

I took 2 pregnancy tests a few days ago and both were positive! My glow app says I should be about 4 weeks and some days. The whole time I've had moderate cramping no other symptoms except for tender breast and fatigue. Yesterday I started spotting tinged pink then a red/orange color. I had a vaginal ultrasound and no gestational sac was found. Ovaries looked okay other then the cyst and no fluid in the cul-de-sac. I had another urine test done and it showed as positive. My hcg blood level was 863. My paperwork said a Corpus cyst might be the cause of a false positive and elevated hcg levels. But I won't know for sure until I go to my first appointment which I can't set up until Tuesday.