Is this an allergic reaction? Dermatitis? Eczema?

I recently got these bumps all over my upper body.... chest, arms, forehead, ears, chin. Both hands and fingers have blisters. The palm blister on my left hand seems to be growing. This started about 1-2 weeks ago but it's getting severe. Maybe I'm newly allergic to detergent? My body wash? I have no idea. I have plans to see a dermatologist soon but for now I'll post at 1am (est) because I am itching real bad. And this happened once I laid down to sleep (the itching) my comforters aren't new, neiher is my detergent that I have been using for months! 
I also forgot to mention that my scalp is also itchy and I feel bumps! My shampoo has been the same for years (head & shoulders bc other shampoos gives me dandruff) 
Also, I noticed that my private area is a bit itchy too but I've always been clean down there and never had itch unless I shaved/waxed! 
PS, my lips/mouth is not affected 
I'm recently going through some stomach pain... started a couple days ago. Bloated, hunger like pain in stomach, constipation. Waiting to go away on its own but if it doesn't I'll be seeing a doctor soon. 
Does anyone know what might be going on?? 
One more thing I want to add, lower body is not affected AS BAD but I am noticing little bumps too (different from razor bumps)