Ahhh sabar je dulu mama, DPO 13 dengan double line tu memang good sign walaupun one line samar, that's how it usually shows at first! A few of us went through the same thing and some turned out positive later, some tak, memang macam rollercoaster. Tapi jangan stress sangat because stress memang boleh delay period lagi, so try to relax and wait a few more days before confirm negatif, sometimes the hormone levels macam tu je naik turun awal-awal. Sending you all the good prayers, semoga rezeki datang untuk you soon!