Usaha Hamil Tapi Tak Tahu Waktu Subur

Sy dh 8bln kwin, tapi belom hamil. Sdihnya rs. Sy cuba nk trace ble wktu subur, tapi masalahnya period sy xtratur. Xtau bila waktu subur n tak tau smpai bila kna berdua cmni Mama2 yg ada pngalaman kira wktu sbur org yg period tak teratur blh share x mcm mne? Sis is feeling down right now ??