I woke up this morning with huge whelts all over my legs. They don't itch but, to the touch they are huge. Can anyone tell me what this may be?

HI,
I am not a Doctor, so these are just educated guesses.
Could be an allergic reaction to something. I am allergic to strawberries, or anything with them in it. After eating much cake, with strawberries, some years ago, I developed hugh welts on my legs, and back. Had to get a shot from a Doctor.
Also, might be mosquito bites? Or some type of bedbugs?
You could also go to a doctor, maybe he/she can tell you.
Best of luck.
PS; I lived in Northern VA for 13 years, before moving to the Great Smokey Mountains of VA.