Kick starting the flow?

Taryn • Married to the most amazing man in the world! :) Trying to conceive our first baby. His 3rd & my 1st - Currently on Clomid 50mg - PCOS affects my fertility - Liberty University- Ultra Conservative Right Wing Republican- Trump Train
So, I am 17 days late with two bfn's. Is there any way to kick start my period without going to the doctor? I'm currently feeling some cramping like AF may be on her way. Not sure really. I'm super stressed out from work and school and a long distance relationship. You guys know of anything? I've heard mega doses of vitamin c can do it but I've never tried it