Symptoms of blood clot??

I’m indecisive on if I should go to the walk in clinic or not. This morning around 4am I woke up with what felt like a really painful leg cramp. It was burning, like stinging and tugging from my hip to my foot. Walking and stretching didn’t seem to make it change. It stopped around 5am and I was then able to fall asleep. I didn’t feel any pain today but it just came back an hour ago and it’s still here. It’s as if my muscles are being tugged from my hip down to my foot. I’m on the pill and I was afraid this might be a blood clot??