No, it's not good to wait to change it. it was pointless for you to change the oil because all the oil gets trapped and recycled through the oil filter. If you dont change the oil filter then it gets clogged up. If you go to the local autoparts store then just look up in the FRAM filterbook under Cavalier non Z24 and it will tell you the filter to get. ALWAYS change the filter with the oil.
P.S. Next time, try posting in the .
CHEVY forum.