Baby aspirin and progesterone!!!

I recently had my third miscarriage this year, I’ve only ever been 4ish weeks pregnant and miscarried 😞 I had my progesterone tested recently and it was pretty low. My doctor wants me to take baby aspirin and progesterone right away. She prescribed me progesterone and I picked up some baby aspirin.

But I was reading you should only take progesterone AFTER ovulation. I start ovulating next week and I haven’t started taking anything.

Has anyone tried this combo and had a successful pregnancy???? When should I take the baby aspirin? And what is it suppose to do… I couldn’t find a lot of information on it