Being absent from work every month for 1 or 2 days shows indiscipline unless you have a valid reason to do so. As suggested by most here better check with the HR of your company. If absence is the reason for termination you can explain them the need to take that leave or apologise if it was done intentionally.

Respect the employment opportunity that the Almighty has blessed you with. There are many who are willing to work hard but aren't getting the opportunity.