I have a Sore throat and Nausea tonight and feeling horrible . Starting to worry that I missed something with my son. He…

I have a Sore throat and Nausea tonight and feeling horrible . Starting to worry that I missed something with my son. He has been throwing up the last few days after he eats. I thought he just couldn't tolerate my breastmilk. He slept like crazy the last two days and today he keeps crying like he is in pain. Finally got him down. May have to go to ER if this keeps up.