Should i use a condem to masurbate?

So one day i Was in del i was home alone and i found a condem in my aunts room and i took it and used it it was a normal guy condem ,i put it on two fingers and started to masturbate even though im still a virgin but wen a wk passed by i tryed to do it again without the condem and it hurted like hell so i can only put one wet finger done there without it not hurting.is that normal?or should i use lube?