Vomit/spit up


I'm at my wits end. It's now been a week that my son has randomly started to spit up his entire bottle. He turned 6 weeks old on Friday. He's formula fed. He was on Gerber Good Start Gentle Pro until last Monday evening. He had puked twice that day. We were going to change him anyway to Gerber Good Start Soothe, so we just decided to do it that evening. Since then he has spit up entire bottles about 5 times. Before Monday, he had only spit up a lot 2 times. We were switching him because he was very gassy and fussy on the old formula.

His stools are normal. He's less gassy. He's burping more, although they sound wet. We thought that the spit up/vomit was from mucous/low grade fever but now I don't know. It's just so weird. This spitting up also coincided with an increase in body heat. Anyone have any insight or similar experiences? I'm tired of doing extra wash, baths and showers.