Period after birth

Hello mga mommies! Ask ko lang po if you guys experienced na after normal birth for three months nagkaroon na kayo ng period, I’m taking pills and nung naging intimate partner ko we used a condom. After that time wala na po akong period my baby is already 6 mos and 3 mos nanpo ako nawalan ng period. I took pt but still negative. Pls need ko po ng help and comment asap.