Terazol 3 - I am 7 1/2 weeks pregnant & my doctor prescribed terconazole 3 suppositories for my?

If your doctor has prescribed it then it should be fine for you to use.

Pregnancy—Studies have not been done in humans for use of all azole antifungals during the first trimester of pregnancy. These medicines are safe and effective when used for at least 7 days during the second and third trimesters of pregnancy. However, check with your doctor before using this medicine during the first trimester of pregnancy.

If infection persists please see your doctor again.

http://www.drugs.com/cons/terazol-3-vaginal.html