The symptoms of an ovarian cyst include:
- Swollen/sore breasts
- Abdominal bloating/swelling
- Pelvic pain in various situations, like before menstruation and during intercourse
- Lower back pain
- Nausea and vomiting
You can see how some of these symptoms could easily be confused with pregnancy symptoms! Since pregnancy tests are pretty accurate, as long as you test after you have missed your period, I would say that yes, you could have an ovarian cyst. Check it out with your doctor to know for sure, and to see if you need any treatment. Fibroids and endometriosis can cause similar symptoms as well, I think?