Sensory issue. Is this indicative of?

I have been facing numbness on the right lower cheek. It's been two weeks. The numbness is not so much prominent but u feel my cheek a little bit drop. There is no difficulty in any functions of the face or swallowing. I have been taking vit b12 supplement for about a month now. And have also taken calcium and D3 supplement too for a week. The sensation is also present. It's a bit numbness that makes my cheek feel a bit heavy. Also from the last two days I have been having tingling sensation on my right leg. Sometimes there is burning sensation on my left arm it's like these sensations switch days. One day its the arm, one day its the leg. It's been really bothering me. Am I having some kind of big neurological disorders which might end up in paralysis? Please help. What should I do? What is this indicative of??