 [ Symptoms ] why did i have an adverse reaction after taking gas x [ Disease ] i have no way of blindly diagnosing the cause of your sore throat over the internet this is going to take a hands on examination and perhaps a strep test because you are pregnant you must be carefully examined and treated with medications that are safe for you and your baby this may be just a bad cold but you will need to see your medical provider to make sure you do not have something more serious going on