I am 25 and my gf is 23.I have a question regarding me and my girlfriend.Me and my girlfriend tried to have sex on july 7 I didnt wore a condom first when I tried to enter her I just kept the tip of my penis on the opening of her vagina and pushed a little but she felt too much pain so I removed my penis immediately(no semen came out from my penis) after some time we again tried and this time I wore a condom and fully entered her but as she was feeling too much pain I removed my penis and that was the end for the day. In the month of july(on 28) she got her period but in month of august when her period date was nearing i.E on 28 she developed internal heat due to immense drinking of tea and coffee and she used to feel pain in stomach and a drop of blood use to come in a day this went on for a week(my girlfriend have irregular periods).Now the date has passed for august still now she has not got her period my question is that is she pregnant?Please put some light on this problem we are confused and one more question is it necessary that sperms should go deep inside the vagina to get pregnant I mean if rub I my penis on her vagina and no sperms have come out and just the pre-ejaculatory fliud then also can she become pregnant.Please reply as soon as possible we both are under deep mental stress because of this.