Brown Blood

Hello 50 year old female. I have been taking progesterone for about a year, but just recently a few months ago, my doctor told me to switch from taking the progesterone every day to only taking it 12 days at the beginning of the month so I could regulate my period. I had my period the last week of July and now mid August I’m experiencing Brown Discharge Blood. Should I be concern about the Brown Blood being that I just had a period a few weeks ago ? Pls help .