i didn’t go to bed until about 3 or 4 am this morning. i woke up about 2 hours later, which is weird because i usually will sleep in late if i go to bed late. i woke up to my heart pounding, a lump in my throat, cold sweats, and my stomach felt uneasy. i felt like i was going to puke, but i got myself to calm down and went back to bed eventually. 

i’ve never woken up to something like that, it only ever happens when I’m actually awake. have any of you guys experienced the same thing, and how could i try to prevent this from happening again?