I changed my rotors and pads awhile ago but now all of the sudden the brake pedal has no pressure and is always going to the floor. On hills i have to pull the ebrake so i don't roll into someone. Anyone have any suggestions? I checked the fluid and it was ok, do you think i might need to bleed the lines again? thanks

Could need to be bled again. But I'm thinking there is more of a chance you bled the brake line fluid back into your master cylinder when you opened your calipers up. If that is the case I'm more inclined to believe that the burnt crystalized old brake fluid got into your master cylinder and now you need a new one. Thats why just about every company that makes brakes and parts makes a brake line clamp. So that doesn't happen. Do your brakes feel fine until you are stopped and then the pedal just loses pressure or is your pedal just mushy? If it's just mushy it probably just needs a bleed. But probably not the problem presuming you bled your brakes right.

you probably let air back into the system, or your master isnt functioning properly. blled your brakes with fresh fluid and then check. you shouldnt be driving like that. did you touch any vaccum hoses?