I used warm salt water to gargle and it helped a lot. Breathe in steam too. Make sure to you drink lots of liquids, tea with milk and honey or plain tea with lemon. Also call your doctor and see if they can see you or provide medication that are safe

Tbh I thought you could only get antibiotics from a doctor, and GP would only prescribe something which is suitable. Drinking more may help, or cough lozenges etc.

Go see a doctor

Antibiotics is not always gonna help you with a sore throat. You'll have to see a doctor to determine if you need it. But if it's a virus you can only try and ease the pain best way possible.I usually live of tea with honey but it's not always enough.

A doctor can prescribe antibiotics but not sure during pregnancy. Have you tried spoonfuls of honey? Or even gargling salt water? They won’t fix it right away but will provide some comfort.