"I tried twisting the barrel adjustor and I will test it out tomorrow." Randomly fiddling with adjustments will get you nowhere unless you are lucky. If you don't feel like trusting to luck, adjust your derailleur in a methodical fashion:
http://www.parktool.com/blog/repair-...nts-derailleur Bikes do not usually just start mis-behaving all of a sudden. Did your bike get dropped or hit? If your derailleur or its hanger got bent you will have problems until this is resolved.