So I finished my letrozol last night the past two days I have had a little brown spotting which is normal for end of cycle today went to pee and bright red blood pretty good amount today is cd 8 last month was 1st failed <a href="https://glowing.com/glow-fertility-program">iui</a> with letrozol also was taking estriadol and progesterone would this be because of those meds?