It's natural to be concerned that this could be cancer, but ovarian cysts can indeed be very painful and bothersome - so this very well could be a cyst. Monday may seem like a long time away, but it's really not. Find something on which to focus your attention until your appt on Monday - maybe pick a project you've been putting off and get it done, if your level of pain will allow you to do so. Also, take at least a little time and do something fun, especially something that makes you laughter. Laughter is wonderful healing medicine as well as stress relief.
Also, make a list of any questions you have for Monday, and take that list with you - make sure you get your questions answered.
Wishing you the best, and hoping for a good report from you next week!
Sincerely,
Tre