delayed

19 days delayed but i take pregnancy test today result negative,maybe some reason?i remember naggising aq ng 3:30 am umihi then after uminom aq ng tubig ngo natulog,pagkaggcng q po ng bfore 6am umihi ulit aq then take a little for a pt but the result is negative,hndi po ba tlga aq buntis? regular po kc at laging advance ang mens q ,last january ds yr n miscarriage aq pero after that nagpills aq kc magwowork aq ayw q muna magbuntis but laging sumskit ulo q kya hininto q,nagtake aq ng pill after miscarriage jan.to feb isng pakete lng ngmit q,but mens still normal march to april ,advance pa ng dting ng mens q,then nitong May d n q dinantnan 19 days today delay,sana po my mkapansin,gusto q po kc mbuntis na e,,delayed lng po b tlga o buntis aq..thanks in advance po s sasagot..