Just need to vent...

Hey ladies! I'm 30yrs old and my SO and I have been ttc for the past 5 months. My periods range from 27 days-56 days 😱. If I skip a month it's usually due to stress. Doctor prescribed me medroxyprogesterone back in July to regulate periods. I haven't had a period since August 9th and I think it's because I skipped a few days on the progesterone pill. I want to believe I'm pregnant, I have the signs (sore boobs, wiped pink discharge one day, now I'm sick with a cold) but I can't handle a BFN. I know skipping the pill could mess with your cycle-but it's almost October!? I just need some words of encouragement right now.😢