chaaassmm

hey so the other day i was heading to mu aunts when all of a sudden i couldn't go past second. stopped at her place since i was just down the road when it happened. checked fluids and it was ok. topped it up+ added stop slip. now when i drive first gear refuses to shift before 3k then has a super slow yet hard shift. and when i am driving unless I'm doing the speed limit collated with the rpm. nothing will happen/ the rpms with drop and the truck coasts like it's in neutral. i swapped the tranny fuse (fuse #4) to see if that would do anything and it didn't. would it be the 3rd/4th clutch packs? or more of a torque converter? from what i have read online . the truck doesn't throw any check lights. not sure about codes as i don't have a code reader. also i cannot use the column shifter. as when i try to manually shift any of the gears it just revs and acts like neutral.