You should see your doctor, if it's strep throat or anything like that you'll need antibiotics. It's important to take care of any infections during pregnancy, so if it gets worse I'd go in.
Iv had an ongoing throat infection now I'm on antibiotics so see a doctor
Try gargling with warm water and salt
Ive had a sore throat for a while. I find that acetaminophen helps quite a bit. Just like generic Tylenol.