Pain in chest and jaw when laying?

Sa

So, for the last few months, about 80% of the time when I lay down flat for the first 10 minutes or so my right side of my chest above the boob and my right side of my jaw will begin having a sharp pain. They both start hurting at the same time, which seems weird to me because I didn't figure you jaw or chest affected eachother. I'm afraid it's heart related, but I also know nothing about anatomy..lol

Anyone else experience this? Or at least know why?