Beta for a sore throat i always say warm salt water gargle and honey in warm water first, very soothing. Those medicated lozenges better ask your doctor before sucking on them. No need for medicine for a small throat.
Lozenges have active ingredients so i wouldnt pop them freely in pregnancy. Gargling and warm fluids handled my throat just fine. If it really persists, ask your gynac which lozenge is okay.