Aching Legs In Pregnancy Cramping In My Legs During Pregnancy- Is This Normal?

Cramping in my legs during pregnancy- is this normal? - aching legs in pregnancy

I am 21 weeks pregnant and woke up this morning, down with a terrible pain, pain the legs. Pain so bad that the muscles of my ass all the way to my cow.

What can I do? I would also like to get up, I just introduced.