Don't worry! It could always be your charger block or cord. Double check that the phone will not charge with another cord set.
Trick 2: Use a toothbrush that has been dipped in 91%-100% isopropyl alcohol (tap off the excess) and try to clean the port as best as possible.
If this does not work, based on that I cannot find any repair guides on the web right now, I'd recommend taking it to a local repair shop.