all 3 of mine had reflux its like the worst heart burn ever so they cry and cant lay down they throw everything up and because of this dont gain weight easily. medications can help this before it gets to bad. my 2nd child had breathing problems from it and my third had seizures. all very scary when its just your tiny baby. the blue spots need looking at straight away this is sometimes a sign of meningitis. dont panic. its most likely not but pls just check.
I don't know how everything works in your country but I would see a specialist baby dietician who can sort out what he needs to eat to thrive. You go through your Doctor who can send you to one.
hello,
when my sister was small she would not eat and was always crying. my mom could not give milk but she was too young to have food realy so my nanny made a mixture of waterd down milk and a bit of sugar in it. she ate a bunch and went right to sleep. she is now 23 and healthy, good luck.