Hi, I know it s probably too early to be concerned, but yesterday after getting back from the beach, I got a very runny nose, sneezing and a slightly sore throat (I m very prone to allergies, specially when in nature or swimming). They were all gone by this morning, though they kept bothering me all evening and well into early hours of morning even after taking allergy medication, but for a few hours now, the front of my neck, on both side of the windpipe has been sore/tender to the touch ( and still tender but much less so when not touching) or if I stretch my neck/move my jaw, specially in the middle of the neck, and now a spot under my left jaw has become like that too. what could be causing that? just sore muscles? Also I don t know if this is even related, but I ve also been getting very itchy red rashes that flare up on some part of my body (specially arms and chest) and stay for like 30-45 mins and then subside to a much less red and not itchy skin. I m female and almost 24. 4 11 and 102 lbs.