Past few weeks I've experienced a warm wet sensation on side of left calf. It literally feels like warm blood or water is dripping down my leg...

Neuropathy . You should see a local neurology specialist to assess for neuropathy. There are many causes of such nerve issues, some are easily treated and some are not.
Doctor can evaluate. A primary care doctor and a neurologist can evaluate to see what might be going on. Some patients with a condition called arachnoiditis have sensations that may feel like insects crawling on the skin or water trickling down the leg. Arachnoiditis is an inflammation of one of the linings of the spinal cord.