TTC & 6 days early & gyno appointment tomorrow!

My husband and I have been TTC for 8 months now. Today I started my period but I'm 6 days early. Shortest cycle I've ever logged - 20 days. My last period was only 3 days. Anyhow... I have my yearly gyno exam tomorrow and planned on discussing TTC. Never dreamed I'd start my period this early. Not sure if I should just keep my appointment and hope they can do everything or cancel or what. I've been waiting for this appointment for a while because I'm anxious to see what has to be said about us not being able to conceive yet. What to do?