odd rev?

Hey, ive started to notice something as my clutch gets worse and worse. If my foots off the gas and i push the clutch in at any rpm, the rpm raises. Like im doing 30 at 1700 rpm in third and i push the clutch in, fast or slow, it will raise to like 19 then fall down to idle. Is that normal?? if it isnt any suggestions of what it may be ??