I have a bruise on my throat. It started out as a stiff neck , then a sore throat about 7 days ago. I went to the doctor and took a strep test and it was negative. On day 4, my sore throat was feeling better, but the bruise appear near my thyroid ( right in front of my neck where I swallow ). I went to a doctor on day 7, he looked down my throat and saw nothing, but the bruise is still there and I am starting to have a hard time swallowing . What type of doctor should I see?