Aww sis, a week delay can definitely be stressful lalo na kung regular ka normally! So honestly, even though PT tests are pretty reliable nowadays, seven days delayed and a negative result could mean a few things, sometimes the pregnancy hormone isn't high enough yet, or maybe your cycle is just being weird this time around (stress, diet, or travel can mess with it). Since you mentioned the pain sa puson and this is unusual for you, I'd really suggest getting a blood test done sa OB mo para ma-confirm, mas sensitive siya than PT, kaya makakasiguro ka na agad. A few of my mum friends had delayed periods na di pala pregnancy, so don't stress too much yet, but best to check with your doctor just to be sure and rule out anything else. Praying for clarity for you, mama!