Uy, totally normal yan! A few of us mums have the same experience, some women get cramps and body aches days before, pero some of us walang ganyan kahit malapit na talaga, so it really varies from person to person. Basta kung pakiramdam mo ay okay lang and you're feeling fine, no need to worry, babe! If anything feels off or nagbabago suddenly, then check with your doctor para sure ka lang, pero based on what you're saying, sounds like you're good na.