My boyfriend has leukemia... I'm struggling.?

I'm living in the Philippines and my boyfriend is in Singapore,. Just yesterday, he was rushed to the hospital. I was really worried since theres no one taking care of him, not his parents. last time I talked to him he said that the doctor said he has more white blood cells than his red. And they had to take some of his bone marrow. He said that it might be leukemia but will know the test later. I don't know anything about cancer and I researched about it. But the fact that I don't know which leukemia it is so i could not understand. After talking to him I tried calling him but he does not pick up my call... most of the time he rejects it... I have no idea what's happening right now... I love him so much... Some of the people I know says that I should be strong. He loves me so much that I guess that's the reason why he's not telling me... I really want to speak with him. and I don't know anyone who can tell me how he's doing from Singapore. I'm left in the dark and there's nothing I can do. What should I do? It's so easy to say that I will be strong but its really hard to do.