Pregnancy journey

actually im irregular pero nag simula akong mgbawas ng kain at fasting last Sept. then dec and january same date na period ko(regular na mens) then feb 22 which is period ko sana hindi na ko dinatnan then sumasakit na boobs ko then 3days(feb 25) delay naisipan ko mag Pt at ambilis confirmed positive then march 5 take ako ulit ng pt positive talaga sya sana ito na yun kasi ilang beses na ko na miscarriage😥 Last mens jan.22 Accurate po ba yung bilang sa app na pregnancy?