You may need to get on an antibiotic or something. I would definetely mention it to your doctor. Hope you get to feeling better!! :) And welcome to the community.
I do not know, that is a good question. I have a sore throat too. My neck doesn't hurt it is just hard to swallow and I cough all night long to where I can not sleep. Hopefully nothing is wrong. I will be 30 weeks this Sunday.