HI N.,
It may be nothing but it sounds like a circulatory issue. Find a doctor or ND that looks at live blood work. Most MDs don't do it anymore but it reveals a lot about what is going on in the body. My doctor did it when I was a kid and I go to an ND that does it for our family regularly.(I get it done when I go to Atlanta.) This country has so many more issues with blood issues now than we did before because of the preservatives and additives in the foods that we eat.
It usually cost about $25-$35 with a 15 or 30 minute visit...
God bless!
M.