My girlfriend thinks she is pregnant even though we have never had sex. She says her stomach looks bigger. She had her period right after. We fooled around and she thinks some sperm was on my finger. Help me please. She can't get it out her mind and I can't either now

If there was fresh sperm on you finger yes, while not as likely it can happen. Thus the reasons for not having contact sexually unless you are fully aware of what is happening and ready for a pregnancy

its not posible to get pregnant on som semen on a finger

We are a serious Q&A site which prides itself on the accuracy of the answers we give. Everyone is welcome to participate here, we ask only that you make sure of the accuracy of your answers.

Unfortunately, you have not done so. There have been several responses from you that have ranged from questionable to outright wrong.

This one for example. While not likely, it IS possible to get pregnant from sperm on a finger.