Treated with a tooth infection, for 2 weeks had an insert in tooth containing STREPTOMYCIN (at that time I was 8-9 wks pregnant)Risks to the fetus? THX

Vague description. Your description is sketchy, but with any type of infection, especially during pregnancy, it should be resolved asap.
Ask OB. Not sure whether your're concerned with the infection or the drug. Best person to asses risk would be your OB doc.
See a dentist ASAP. If you rely on antibiotics or other not a definitive treatment, the tooth infection always will come back. Dentist will treat a tooth infection by treating the cause and getting rid of the infection. Do not delay. See your dentist ASAP. Good luck.