Progesterone Issues!

Hey everyone! I’m trying to get pregnant but I have some issues. I’ve been getting blood tests and I was told my progesterone level is very low to the point where it seems like I’m not ovulating! On day 7 after my cycle started I was .5, on 14 I was .4 and then on day 21 I was .8! I’m going for more blood work my next cycle but I was wondering if anyone else has had this same issue? Is there certain foods, vitamins or other things I can take to help? I wasn’t prescribed anything but I’d like some ideas to speak to my Ob about! I’ve had an internal ultrasound and everything came back in good shape but something is causing my progesterone to be low! Any ideas of what could be causing it if anyone’s had the same issue??