Annoyed....what’s the next step


So I am four days late (with pcos) and I tested today and received a negative....I’ve had vaginal cramps (tmi) they were not ovary cramps it was in the middle region. Also I have really watery discharge, not egg white but milky. Idk if that does anything. We’ve been trying for almost two years. Does metforim or however you spell it really work?? I’m just tired as I know many of you are! Comments, suggestions, anything really! Thanks!