So a couple of weeks had a wild drink with boys and picked up a csw she gave me a condom which I did put on but I coudnt sustain an erection so I failed to penetrate although my condom protected penis did touch her vagina lips. So I then decided to rub her clit with my fingers for about 30 seconds but I was bored so I stopped so in the morning noticed an old cut on finger. Am I at risk of any STI?