Mental development

My 13 month old has been going through a mental development the last 4 days and it is driving me crazy i am hella tired and 13 weeks pregnant 😭 how do you mumma's deal with this? He was gowing through a growth spurt last week but he handled that relatively okay considering but he doesnt handle the mental one so well, hes like a little ball of emotions and doesnt want me then does and cries all night and day ... and daddy is going crazy with no sleep and works at 7am every week day. I'm drowning here mumma's?!?!?! I have the wonder weeks app which tells me when he is having one or about to have one and he lines up with the expected time frames.