I'm currently 17dpo

Selena

I'm 3 days late on my period. On cd 28 14dpo got my hcg tested less than one progesterone was at 12.7 compared to 9.1 on cd 21 anyways now 17dpo just tested again negative. First cycle on letrozole I should add. With a miscarriage in January. Doc said that I should have my hcg tested monday. If I am still not pregnant and no period should I induce my period ? I've never had regular cycles due no never ovulating hut normally I would bleed every two weeks so I don't know what to do.

ADVICE Please