Can progesterone delay your period??


last month on March I got put on progesterone because we're TTC and I take it for 10 days then I was suppose to wait for AF on April 11th... well here it is April 21st I am 10 days late I have taken 2 PG tests and all I've gotten is a BFN ☹😢... so I'm wondering can progesterone delay your period? Has anyone else used progesterone? could I really be pregnant but not getting my BFP? TIA