I have woken up with an uncomfortable stinging/burning sensation in my upper right calf (just below the back of the knee) which is worse if it is touched or rubbed. I wouldn't describe it as an achey kind of pain though. Could this be a sign of DVT? If not, what could it be? I'm 26 weeks pregnant. My sister was diagnosed with a DVT soon after giving birth so i'm possibly over-aware and over-concerned but obviously I don't want to ignore something that could be serious!