I have been waking up to severe cramps in my calf. enough to make me speechless! and not able to move!

Is there anything I can rub into them to make them feel better?

Im going for a full body pregnancy massage tomorrow night.. but Im worried I wont enjoy it because when she goes to the legs.... im going to tighten up muscles because of the pain..

The pain continues after the cramp but not as bad.. and im having trouble walking and standing from sitting/laying down position.

DP has been massaging them just with normal moisturiser.. not helping at all!!

any suggestions?