Hey guys I have a 99 Civic Ex that lately has been giving me some problems.... for one once I've shifted into a gear (mainly 3rd) and gun it the acceleration is slow and most times there's a like a grinding noise.... my speculations are that the clutch is going bad and needs replacing but I'm not certain of what signs I need to be aware of, I've had the car for 5 years and the clutch hasnt been replaced and I doubt it was replaced previous to me owning it

Any suggestions would be appreciated and I'll gladly answer any additional questions, thanks!