What should I ask my doctor to put me on or do after 2 miscarriages?

Aaliyah • Trying for my rainbow baby👶🏾🌈 MC on Aug20th 2018 & Feb2nd 2019 PREGNANT May14th 2020 with rainbow baby

My appointment is coming up on the 14th and I don’t know what I should ask my doctor to do I really want my next baby to stick so how will I go about this ?