Prometrium

Hey guys! So hubby went for his SA and it came back with flying colors all my tests have been normal as well. So my ob/gyn gave me Clomid and Prometrium. I missed the cycle days to start Clomid so she instructed us to start Prometrium on day 16 I am to take it every nights until I start my cycle and if I don’t I am supposed to test and call her with a positive. My question is Inhabe heard that progesterone can delay your cycle, anyone in this situation? I’m super excited to start pushing things along!