Checking progesterone after multiple miscarriages.

I'm wondering if anyone's doctor has suggested getting your progesterone levels checked after multiple miscarriages. I've had 2 miscarriages this year (one at 6 weeks and the other at 7 weeks). A lot of the information I've read states that low progesterone levels could account for some pregnancy losses within the first trimester. I just found out that I'm pregnant again (3w6d). I called to ask my doctor if we could get my progesterone levels checked if for no other reason than to rule that out as an issue. Plus, if it shows my levels are low then it's easy fix with progesterone supplements. My doctor told me it wasn't necessary and to come in at 6 weeks for an Early sonogram. I'm a little upset with her bc I don't feel like she's trying to help. I'm planning to call another doctor to get a second opinion but curious if anyone has had a similar experience. If so, did you get progesterone tested and what was the result?