Ovarian cyst🤔

Rakenya

Ok so I’m totally confused first of all I got a positive pregnancy test around 4 weeks and at 5 weeks I started bleeding heavy for 7 days after that i never bled again I got positive pregnancy tests up until today btw my hcg levels were dropping but I came in for my first ob appointment which there was no baby but was a cyst on my right ovary can cysts cause positive pregnancy tests? I would have been 11 weeks .