Rep Power: 0

Hey guys I bought my 5-Speed 01 civic ex 5 months ago and now when i first turn it on in the morning and wait 2 minutes then start to drive the car feels like it wants to turn off. I have to floor it, its like i need to push something through! I'm not sure what it is, I am using premium and not sure if i should be using it? And before it was when i first turned on the car but now if i will go to a shop and come back to the car in 10 minutes the car is still hot so i drive and it does it. And if i completely stop the car shakes and wants to stop.

Somebody Please HELP!