Is it depo? If it's depo sometimes it can take a few months bago bumalik mens mo. But if you wanna be sure, you can take a pt after 1 month and 1 week ka na delay.
Oo, may cases talaga na ganyan. Try mo mag pt ulit sa dec kasi if ever na ur preggy it won't show up sa november as positive result since that is gonna be too early so better try mga december ulit or janjary para sure
Anne Urbanozo