you need to do something b4 your visa runs out, it's too late then. it looks like its over btw you and him ?. so you either go back to the phils with your bb, or you start to try and do something about trying to stay here with the help of his mom.
you need to speak to her, it looks like your wasting your time with him, he just wants you gone, and speak to his mom, about your options, and do what's best for you, your bb and his grandma. go to your local law centre, and get free legal advice, and find out what rights you have, if any to staying here, and do it asap