Question about day 3 of cycle

Coco • Im coco im 32 TTC with my fiance my 2 babies were both 24 weeks which ended in stillborn waiting on my 🌈 👶🏽👶🏽
Has anyone did day 3 lab work what will they be testing me for and if it comes back abnormal will they put me on any meds or just in general what will my doctor do she said I can get the results back tomorrow if I come today