could this be the flu?

I'm really paranoid about getting the flu and I'm sure i've made myself feel worse in my head lol I started cleaning under my bed about two days ago and sneezing a ton (I have bad dust allergies) since then my sinuses feel kinda clogged and when I wake up in the morning I have a dry nose and mouth (I chalked that up to the heat in my house) yesterday I was at a hockey game and jumped up when my team scored and got dizzy (which is probably from the congestion) and today I woke up and my neck and shoulder blade muscles hurt but I woke up with my pillows on the floor so I'm pretty sure its just because i slept wrong. I have no fever, and no chills. Could this be the flu or just allergies or a sinus infection or something?