Why didn't my girlfriend have an org**m?

Hi, recently I used my fingers on her vagina. I tried for 40 mins and still she didn't get an org**m but usually she gets an org**m soon. Is there any problem with me or her, or is it norma? Why is this happening? Please help me and give me advice how to give her an org**m. My hands started hurting as I was rubbing for a long time and her vagina was hurting too... what should I do?

Some times girls dont always get one...sadly. you can work and work at it. now I really dont know if you have something wrong with you. but did you hit the G-spot? try that for a while and the clit...is a real sensitive area as well. make the mood you know in the room and also mabey try using like sex toys or something...