Hello, I would be happy to help you with your question.
So to summarize, you have irregular cycles (i.e. irregular or absent ovulation) and were placed on clomid
(which increased the chances of ovulation) and in addition to that, you were placed on supplemental progesterone
for the second half you cycle. Now you are possibly "late" with some brownish spotting.
The possibilities include:
1. You are pregnant (yes this is possible and might represent implantation
bleeding and you should do a test)
2. You did not ovulate (in which case the clomid dose needs to be increased)
3. You are starting your period soon, and the spotting is the prelude to this event
I hope you are satisfied with this answer. If you need more details, please choose the Premium Service. Good luck!