Very strange skin problem. White print for days! Help please

For some reason when pressure is applied to my arms a white mark is left (you know when the blood leaves) so for example if I fold my arms I have a hand print on my arm. I know what you’re thinking, so does everyone. 

Here is the problem.. that white print can last nearly 3 days!! 

It’s very strange.

I even went to the gym and got the blood following but it’s still there!!

I’m not on Medication, I’m not dehydrated etc. It’s weird.. it’s been Happening on and off for over a month. 

Help please.