Uy, I understand the worry, delayed period after pills can be stressful talaga! Since your last period was June and PT is still negative, mas safe na para makonsulta mo na ang doctor para sure, kasi sometimes ang pills can really throw off your cycle, pero important din i-rule out other things para peace of mind mo. A few of my mum friends had delayed periods after contraceptives din, and yung doctor lang talaga ang nakapagsabi kung normal lang or kailangan i-adjust. Don't stress too much muna, but don't delay the checkup either, better safe than sorry, diba?