Kavslayer

i was driving home from my dads one afternoon. When I started out at a stop sign it gave me a couple of jerks when I let the clutch out. Then it was like it was slipping. The RPMs were going up but very slowly and the car was gaining speed but it was like I was in a civic or something, It just wouldn't go. It did this all the way home. The car sat for the rest of the day and on sunday. Monday when I went to work it did this for about 5 to 10 min then there was no problem with the the car the rest of the way to work. it did it for about 30 seconds after I got off work and then has yet to do it again. I don't know what the problem is. Any help to find out and fix is appreciated.