When he licks you ?'

Kayla
Okay so when my fiancé licks he also insert his finger right and I start getting this feeling like I want to scream lol is that an orgasm lol I been sexually active with him for one year now that happens here and  there also that happen when I ride him it's like a good feeling maybe talk know what I am taking about does it have to do how long he finger it ? Thnx