You are carrying 8.3 wk pregnancy
now with H/O spot 2 wk ago.
All above medicines are safe and very much effective to prevent further miscarriage
and unwanted infection.
Do a USG for FPP/TVS to evaluate feto-placental well being. Consult with your gynecologist and do periodic check up.
Need complete bed rest
,avoid heavy work or long journey,avoid stepping uneven surface,take healthy protein rich diet and keep stress
free for uneventful pregnancy.