hello there i am 26, i have been experiencing weird sensations when i put my head down.  at first i thought it was my cellphone vibrating in my pocket then i realized it wasnt even near me. then i could only explain it like my tummy was growling because it was only in my abdomen. now it has moved to my arms and legs as well.. it sometimes feels like tiny bugs under my skin.. especially when i get off the treadmill. sometimes i am worried it will make me faint but that hass not happened.. it worries me because my mom recently passed of brain cancer and she was also living with m.s.  can anyone help me ease my mind? i am a very big worrier and all i have been thinking is that i am dying.. (like i cane even sleep im so stressed.. any suggestions about that as well?)