somedays, i swear all I hear is yelling, crying and whining. I want to wear ear plugs! In fact, I have a pair of those big yellow sound-proofing ear muffs, the kind construction workers wear and on bad days, I put them on. Then the kids laugh.
That's when I can find my sense of humour. Don't ask me how often I do that because the answer is sad. lol
Project to what your boys will be doing next year, or in two years (go however long you need to find sanity) and realize they won't always be so screamy. Kids yell. They feel excited, body tight, out comes the loud voice. They feel sad and cry, they'll still yell out how they are feeling.
I bet the neighbours are busy feeling sympathetic towards you. Heck, girl, you have 4 BOYS!

All young too. It can only get easier and less noisy, right?

hugs
jm

me:43
FSH 26
DS: born by c-sec Apr15'03, 9lbs5oz 41wks gest. (after 4 years of ttc, starting in 1998)
DD born by c-sec Oct 13 2007, 8lbs13oz 39wk gest. (after just under 3 years of ttc)
~~DS was conceived naturally the cycle following a cancelled DE IVF, using my good friend's eggs. She was on the verge of hyperstimming.
~~DD's nat conception I attribute to using OPKs like a crazy nut, eating grapefruit daily and using preseed. also 5 cycles of TCM ending 2 cycles before that lucky cycle.
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