Cold/Numb spot on leg

I have been experienceing this cold sensation in my right upper thigh. And my leg sometimes is even cool to the touch. I mostly notice it when I wake up. That part of my leg does seem to be cooler than the other leg. IM not really sure how long its been happening. I am 19 pregnant right now if that matters any. The leg looks the same as the other. I find both of my thighs tend to be a little cooler than the rest of the leg but one side even more than the other. Im not really sure if its numb because I do have some feeling in it but just sitting here thinking of it it kinda feels a little numb. It only a spot the size of the palm of my hand if that big. Sometimes the feeling is more to the side and others its a little more on the top side of the leg. Any ideas what could cause this?

[Dr Sharma]

Hi there. This could be meralgia paresthetica that can cause burning pain over the front and outside of the thigh. A nerve passes just over the brim of the pelvis and down the outside of thigh. This is lateral cutaneous nerve, supplying the brain with information about sensation over the front and outside the thigh. This is caused by compression of lateral femoral cutaneous nerve and seen frequently seen in pregnancy.
The symptoms are pain and burning over the outside of thigh, numbness over the outside of the thigh, sensitivity of light touch, and recent weight gain of pregnancy. Treatment for pregnant patients includes cortisone injection around the nerve. Usually it will settle after delivery of the baby. Take care.