Help Terrible Feeling Options

So i just tried to astral project i was laying down on my bed. I was clear and focused for about 30 minutes. After i finished i felt really sick and weak it is hard for me to even type as im shaking bad. I feel almost out of place. Feeling like i was going to pass out like im drained it feels like i havent eaten in weeks. Can anyone offer advice on this this is first time anything like this has happened. I didnt project i just felt really relaxed until i came out of it all these things hit me at once. Any help is greatly appreciated.

Im not sure what was responsible truly im thinking now that it was maybe just laying down for quite some time. And as i was practicing i just simply woke back up and stood up im thinking that going from higher state of consciousnesses to awake and trying to move around really quick my body was just not prepared for it. Eating actually helped after i got up and moved around i just felt like i had not eaten for a week. Im think i lost energy whenever i was in my altered state i did some energy practicing the next day to fill what i felt like was lost. And i have felt much better just a very odd occurrence that sacred me at the time. I have not had that feeling since though luckily. Appreciate your response