My 8 month old son diagnosed with cancer!?

My son is 8 months old and a few weeks ago I saw what I thought was a diaper rash, I start throwing desitin on it but it wouldnt go away. I took him to the doctor for a fever and some wheezing to find out he had bronchitis and while i was in there i asked if he would look at the diaper rash, as soon as he saw it he was quick to say it wasnt a diaoer rash and that he needed to pop it. He poped it and said he was sending it off to get tested. that was monday today it wednesday and when i was changin his diaper i went to apply ointment and more blood and infection popd out of it. I am petrified, not sure if I am scared that my son has MRSA or that I am going to lose him. I keep reading these stories about people who lost their children due to MRSA and I could not imagine losing him. Does anyone have any insight or words of wisdom we will find out for sure if it is MRSA friday morning but to me that is a life time away. thanks you guys