Will I be punished for breaking an oath?

So, when I was around seven years old, my mother told me to say an oath that I will never have a boyfriend (and I did say it), and at that age, I didn't really know what an oath was. I know I am going to break that oath eventually (in a couple years) and I'm not sure if I will get punished, or something bad will happen, etc. I forgive my mother for making me say that oath, as it was mostly my fault for not knowing what an oath was. Every time I search up 'will I get punished if I break an oath', it is mostly related to Islam, and I am not Islam, I am Christian. Islam procedures and beliefs are different to Christian procedures and beliefs. Please, if you, or anyone could guide me and reassure me on what will happen because I am afraid and I do want to have relationships, but not if it will hurt my relationship with God.