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.

I was really relaxed. I was fine after about 30 minutes of getting up and walking around eating some cereal without milk. It has been sometime since i have practiced any sort of meditation or astral projection. I have gotten back into the practice lately as i miss the experiences and the spiritual growth. I feel great today i actually even got started writing a book and everything just flowed. It has been a good while since i have done energy working. Can you elaborate a bit on bad blocks? My past experiences have never been anything like that before. Usually i feel really rested. I used to practice LBRP daily but that was because my parents where not around. They are really christian they understand my beliefs but would freak if they seen me doing a ritual (IMG:style_emoticons/default/sad.gif).