If I understand correctly, you have just been at the clinic and the doctor has suggested that you could offer your sexual services to more girls. Well, your quest right now is to talk to two of the many girls that walk around the town, any two girls, and convince them to have sex with you. To do this, talk to them and you will see that a % keeps going up. The higher it is, the more likely they will agree to have sex with you. If you fail, don't worry, find another girl and try again. Your quest will be fulfilled when you offer your services to two girls in total.