Charly Horse or DVT?

Christa • Pregnant with baby #1 in November 2016! Yippee!
Yesterday morning I woke up with a muscle spasm on the right side/front of my lower leg. Seemed like a classic Charly horse to me and had to rub it out. It doesn't hurt when I walk but is sore when I continue to stretch/flex my foot a day later. 
Is this normal or do get tested for DVT? No discoloration that I see or heat radiating from my leg.