BFP after 4 miscarriages

Took two regular tests this morning and both have super dark lines! Excited but hesitant because of our TTC journey so far.

Started trying October 2020, miscarriage at 9 weeks in February 2021, chemical pregnancy in May 2021, June 2021 and September 2021.

Met with my OB in August 2021 to discuss the situation. She doesn't seem concerned becasue the last 3 losses were chemicals and she believes it is way more common than we think. She did order some blood work (thyroid, blood disorder, prolactin and diabetes) and all came back normal.

Now that i have a positive pregnancy test i want some bloodwork done asap to make sure levels are okay. What is your experience with testing at this stage? What should i be asking for besides the hcg test? I was thinking of asking for progesterone levels to be checked too.