Replace screen, everything working fine after 10hrs iphone4 is not charging?

Replace screen put it back together, turn it on is working(everything)but in the morning unplug it go to work by the time i get to work i only have 20% bat.life, I live15 away from work and it was chargin all nite.need some advise, don't know if i should get the docking port or not, someone told me there's might be something loose but i took it apart like 5 times so far, am going crazy w/o my iphone, please help…

Did you put everything back