Hi there ~
Though you have a greater chance of getting schizophrenia
due to the family history, please do not be concerned to the point where you are stressing yourself out. There are two aspects to the heritability of this condition, one is nature and the other is nurture. If you already have the genes for the disorder (schizophrenia genes have not been clearly identified and there are multiple genes that have been associated with it), your social circumstances including but not limited to your upbringing, lifestyle and relationships also play a role in your getting the disorder. I think that there is no cause for concern right now, however having yourself be seen by a psychiatrist
as well as letting someone you live with know about your concern is essential. Others would notice a change in your habits better than yourself. Hopefully this helped.