I'm a 16 year old female and recently I've started using birth control (not sure if it is relevant but I wanted to add it just in case). Tonight I took about 3mg of melatonin and tried to fall asleep, it worked for about an hour. I woke up and I was feeling really hot and not well. When I was lying on both sides I felt really lightheaded and like I was about to pass out and I got freaked to say the least. I immediately sat up and gave up on sleeping (and now am writing this). On top of that I've noticed that I have a pretty fast resting heartbeat. So at night when I go to sleep, it tends to be very fast and tonight especially it was really fast. Also my left shoulder and arm were hurting and feeling kinda weird as well. Both my parents are doctors and I told them about this but they aren't very awake at roughly 2 in the morning and they just brushed it off and told me I'm fine. Now being the hypochondriac I am, don't fully believe them. I am feeling a lot better right now except I have a headache but that might be from my previous panic attack. If anyone has any insight on this please please tell! Thank you!