Pregnancy again after a miscarriage

Katrina • Dorothy Rae 7-11-18, angel 12-6-18, Douglas Wolfe 12-11-19

Guys I’m literally in tears and need advice I lost a baby last December, December 6th to be exact and I am currently due December 16th, 2019, is there anything I can do to help my body keep this baby? Is there any tests my doctor should be doing? I’m so scared!!! Any advice welcome, I appreciate you all so much for any advice you can give me.