9 weeks old suddenly wailing and struggling with night sleep

No

Anyone else have this issue after the two month shots? Hoping that’s it.

He got shots on Wednesday and started Pepcid for reflux Thursday. I’m hoping it’s a temporary reaction because he was going decent stretches at night and my life as a mom of two was totally doable. Several awful nights in a row have me very very tired and feeling fuzzy :(

Thought we were in the clear sleep wise till the four month regression! :/