I miscarriaged just over 6 weeks ago and still no period and negative pregnancy test?

Give it time.: Everyone's body is different. Your body has been under a stress and needs to get going again. Give yourself another 4 weeks and then return to your OB.

GYN exam: and hormonal testing are needed.

OB : Sorry you are not feeling well. It is a good idea to see an ON/GYN get hormone labs drawn and possibly ultrasound/pelvic exam. Studies show 10 days of oral medroxyprogesterone acetate or norethindrone acetate will cause withdrawal bleeding a sort of pharmacological curettage and will hopefully restore your normal rhythmic menstual period. Dilation and curretage is a reasonable next step by OB.