What does a blood clot in the arm feel like and is the only way you know here is one by swelling and redness and hot to the touch?

I’m concernered I have a clot in my arm. My arm is almost numb and tingling real bad from my shoulder blade through my shoulder hurting most under my upper arm and all he way Down to my hand and fingers with a hot sensations like a burning when you hit you re funny bone. I also had this feeling in my inner thigh. Anyone have exprience? It’s late at night so I can’t go to the dr til morning. I’m nervous about making it through the night.