Left Leg discomfort

My left leg has been giving me some grief for the past couple weeks. It doesn't hurt. It feels like there is some pressure from the lower calf to just above the knee. I almost feels like my leg is starting to fall asleep. it is more annoying than anything but me in my panicky state starts to think into it too much. To I have deep vein thrombosis (blood clot), restless leg syndrome, am I going to have a stroke? I also thought maybe it is my sciatic nerve. It comes and goes but today it is really bad. I also just woke up from a nap with my leg elevated and my blood pressure was through the roof. I hate this.