Feeling Overwhelmed and Exhausted as a Parent

Having an extremely hard day today. 3mo. old wont stop fussing after shots yesterday. Dad has to sleep and recover from a hard week at work. But ive been overstimulated for a week now and i broke down in front of everyone yesterday and shut down crossed legged and pluging my ears on the couch. Even now chronic pain wont go away because i cant stop moving or caring for my baby. I feel like im failing and everyone who has offered help cant help when i need them most. I just need it all to stop. just for an hour or maybe two if i can get lucky. just enough to make the pounding in my head go away. just enough to eat something for the day. just long enough for me to be somewhat okay again