Rep Power: 0

I have a 2000 civic hatch. It was manual and d16y8 swapped when I bought it. I have had the car for about two months and drove it pretty rarely. I decided to drive it 7 hours back to where I live and had no problems. When I took it out the next day i shifted to third then the car began to slow down. It’s in neutral but there is not a lot of movement left and right. I can’t shift into gears. The clutch has pressure when I push down though. Any advice would be welcome.

 
Rep Power: 367

anything in between shifter and transmission can be the culprit, start checking them