Baby shower and birthday?!

Aileen • Mommy of 2. 2 previous MC.
This is my second pregnancy and I am not sure if anyone is throwing me a baby shower. So we were thinking of throwing ourselves a "diaper shower" with our son (turning 4) birthday. I am due one week after his birthday. So most likely we will do it a month early and am wondering if anyone has done 2 celebrations in one?