Mabilis ka bang nabuntis or did it take time?

Mabilis lang po. 4 months after wedding inisip namin na magtry. Calendar and withdrawal kame for 7 years na magka live in kame. After 4 months nagtry kame 1 week after ng ovulation ko. Still nabuo parin kahit low chance of pregnancy. Sabi ng marami compatible daw kame masyado ni hubby.