tongue swelling??

does anyone else's tongue seem to swell when they lay down? its happened to me a lot recently. i also have a sore throat if that changes anything. i had my heart checked earlier this year.. but that was in februsry. i just turned 15, is it possible something bad couldve happend to my heart in 8 months?? in fact, i was just laying down and my tongue felt weird but i just ignore it and all of a sudden k got this.. adrenelin rush and i thought i was dying. anyone else experience this??

it also happens when i wake up, but i dont knkw if its actually swollen because i csnt tell but sometimes i look and it DOES look swollen but i dont know how to tell