My periods have been a little irregular the last few months, so my doctor had me take an rx for progesterone for 10 days to start my period. My period was much lighter then my typical and lasted about fours days. Then on the day I was suppose to ovulate I noticed some brown/pink spotting, but very very light. My husband and I had sex that night. The best day the brown/pink spotting turned bright red. I have now been experiencing that for  2 days. I also have been noticing what might be mild cramping (not the same as my normal menstrual cramps). Wanting to know what this means? and if this is normal after taking progesterone?