Ok I was in the sacrifice room in Vault 11 and in the middle of the robots attacking it said I was over encumbered, so I check my inventory, nothing new. Then I notice that my carry limit dropped from 200 something to 190, so I check my stats. My strength, agility, guns and idk what else has the (-) next to it saying that it's been damaged or something. Is there anything in that room that does that or did it just happen randomly? And how to I get it fixed?

check your status and see if anything is effecting you. The only thing I can think of is you ate some radioactive food and got radiation poisoning.

Don't forget withdraw symptoms.

No I hadnt eaten or used any chems, it just randomly got damaged. It's back to normal now though.

Are you playing on hardcoe mode?

Check the EFF tab on your STATUS screen.