Ang assumption ko is may regular monthly menstrual period ka at 30 days ang cycle mo. If ganun, fertile ka sa 16th day mo which is papatak ng dec 14. Ang sperm cells pwede magstay up to 5 days so yung sex niyo ng dec 11-13, lahat unsafe.
Yes pwede.
Pwedeng if konti, implantation bleeding. Otherwise, baka may problem. Better magpacheck up para sure and maagapan kung meron mang problem
lovely galzote