Our little silver needs your help for his surgery!

When I gave birth to my son last June 2016, at 3days old he was diagnosed having a Hirschprung Disease in which a part of his large intestine doesn't have a nerve cell, so whenever his stool reaches that part, it stucked and his stomach becomes bigger because there's no nerve cell to help push the stool to his rectum down to anus. Due to that he had to undergone an emergency surgery and had a temporary colostomy so his stool can be released from his body. Supposedly once he reaches 8mos old as recommended by the surgeon, he need to undergo another surgery which is called "pull through" so that the affected part will be remove and he can have a normal bowel and live a normal life. However, I can't afford the cost of his operation since I'm the only one working. He's already 1yr and 10mos old (22mos) now and still I don't have any savings yet for his operation. I also had 2 other kids and my husband doesn't have a job since he's the one who's taking care of them when I'm at work. We can't work together since no one else will be left with my son specially in his situation and special needs. I tried to save some money for his surgery however there's nothing left from my salary as it is just enough for our basic needs and medical supply needed for my son like for his colostomy bag. I work in a call center and I only earn about P7000 every 15 days. We don't have other source of income. If I will just depend on my salary for his operation, it may take a long while before he can have his surgery done. I'm begging for your help.As a mom, I really want my son to have a normal life as early as possible and enjoy his life as a child. It hurts seeing him wanted to play and enjoy like other kids does but he need to have some limitations as I don't want him to get hurt. We will truly appreciate every help you'll give. Thank you!