I took unisom 2 or 3 pills every night. i'm 18 weeks pregnant. how can it affect my baby and can i see if some things wrong on ultrasound?

Diphenhydramine ;: B6, previously marketed as bendectin for morning sickness, was taken off the market because of concerns about its use in pregnancy. No teratogenic or other adverse effects on fetal growth ; development were found. The combination is in use again. The latest news is that acetominophen (tylenol) ; Aspirin should both be avoided.