Letrozole/trigger Cd 35. No period. Negative hpt

On 4/20 I had two follicle 20 mm and 17 mm so i triggered that night and had my iui 4/22. Here I am CD 35, 14dpo iui and 16dp trigger and have not started my period and possible getting faint positives but honestly think they’re Evaps bc they do not get easily seen till 10 minutes. Anyone else had this happen? How many days should I keep waiting or should I call the doctor tomorrow? Also idk if this makes a difference but my cervix is high and I keep having milky/clear CM. Any insight is appreciated.