Do i love her or not?

Me and my girlfriend have been going out for 2 months and she is dead in love with me and i thought i was dead in love with her. But i had a very very bad week and one night i just wanted to be by myself and she thought i just didn;t wanna tak to her and wanted to break up with her. She was sobbing. The next day we hung and i was still thinking about the week and i've been having some family probalems and i felt sooo much i didn't feel anything or i didn't know what i was feeling. I thought i lost love for her, but every now and again a switch goes off in my brain and i love her again. This has happened over the past 3 days. Do i really love her or is my mind on my family problems and the bad week? Is this normal? HELPP