Can hemorroides be a sign of pregnancy 1 day before period?

No , who told u that. Hemm are usually a sign or constipation and straining, once you become pregenant as the pregnancy progresses hemm can become worse and they can become very bad after labor, but usually will get better post partum, do a urine preg test that is a much better indicator whether u are preg or not or a blood preg test which is the best.