if 1 week delayed dapat may 2nd line pa din. kung mababa pa hcg mo, dapat may faint line pa din. may other causes po ng delay ng mens it could be stress, lack of sleep, hormonal imbalance, pcos etc. pag more than 1 month wala pa din regla, pacheck up po kayo. kung duda kayo na buntis kayo, aside from pt magpa beta hcg po kayo to confirm if preggy or not.