21DPO tests are BFN but LMP 11/3

Okay guys. I am 21 DPO and still not sign of AF. have been testing most mornings all of which are BFN. Having some nipple itching/soreness, milky vaginal discharge as well has significant nausea and fatigue. I have my annual GYN visit on friday but I dont want to get my Hopes up again. I can accept that I am not pregnant but how am I supposed to move forward and try again when AF hasn't shown up yet . Any thoughts???