sma1588- There is nothing in the world I hate more than having a sore throat! I was really sick over the holidays and strep throat was part of it- you can take tylenol- just follow the directions on the bottle and don't take extras- Also, if you run a high fever or end up with pustules on your throat go to the Dr! Strep can be really dangerous for you and your baby! Amoxicillin is perfectly safe if you need to go on antibiotics- it does cross over the placenta some, but it's what they give even preemies for infections. Here's my long winded list of advice, hopefully something works for you!
Avoid herbal teas that have any kind of "root" in them- Valerian, marshmallow, licorice etc. - also anise, catnip, chamomile, comfrey, ephedra, mistletoe, hibiscus, horehound, Labrador, lemongrass, licorice root, mugwort, pennyroyal, raspberry leaf, rosemary, sage, sassafras, stinging nettle leaf, vetiver, and yarrow.
Most fruit teas are ok- Green tea in moderation, the same with peppermint- Ginger tea and Rose hips tea are also ok. Be sure to read the ingredients! Hot water with lemon and honey is amazing on a sore throat.
Ok, now for the weirdo old fashioned home remedies

lol they sound strange but they actually do work- rub vicks on your neck, fold a washcloth in half and wet it with warm water, ring it out and place it around the front of your neck, then pin a wool sock over the top of the washcloth around your neck.
Also, cut up a medium onion and put it in 2 cups of water, low boil on the stove for 5 minutes. Let cool to drinking temperature, then pour onion broth into a cup- salt if needed for flavor. GARGLE with half, drink the other half.