How long?

How long after stopping progesterone did your period arrive if you have used it before? Last cycle mine came on the next day, it was very light but there. This cycle has been weird. Spotting since last Wednesday, and all negative tests so last pill was Saturday night. Thought it came on yesterday since I had some blood after sex, but nothing progressed since. Should I give it another day before calling my doctor? Maybe test again tomorrow? This is annoying haha. Why does TTC have to be so frustrating and confusing? The progesterone was supposed to end the spotting like it did last cycle, not make it worse!