Can't sleep bcause of tingling sensation

Hello, I m currently 16 and have a fit body and I can say I am quite healthy. I usually stretch my body (yoga) or something like that and I focus on my thighs and below, I always do this to keep my flexibility, but somehow just having my usual night, suddenly I felt tingling sensation on both of my legs which keeping me from sleep. I don t know how this tingling sensations occur but it makes me worry :( Til now i haven t got a sleep not even a second. I can t! Even though my eyeslids are so heavy and wantn me 2 sleep. My BODY refuses. help? I keep on wondering if Id inherit my family med history which was rheumatism, and I m too young to have that disease :/ It just happened to cross my mind when I have all this hours and had nothing to do but just stare at my room s wall. Well, hope it justs for now. But i kept feelin this tingling and its somehow really scary. Please kindly help me or clarify me with this situation I am suffering in, may God bless you! Thank you!