Advice?

This may be long. I apologize! I had a positive pregnancy test, two days later I started spotting and tested negative. I spotted for 8 days. I have a regular period, I got off birth control back in September and have had normal periods since. My doctor basically said it was either a false positive or a very early chemical pregnancy. But I have yet to get my period again. I’m scheduled to see a gynecologist but it is now being moved to another month out. Any advice????