Yes! Yes yes yes! I call it the 'Mommy Funk'. Half of it is because I'm trying to give my children some attention while multitasking, part of it is lack of sleep, and the other part is just plain ditzyness. Partly due to not speaking to anyone over the age of 6 for the majority of my day. Shoot, even grasping the name for the .. whaddyacallit ... whatsitcalled ... you know ... that thing that heats up the food ... oh yeah, OVEN. Even just losing proper nouns in the middle of my sentence. Sheesh, I'm scatterbrained.
My husband teases me relentlessly about it, but the day that HE goes shopping with both kids - a truly rare occurance - and he forgets something on his list ... I smile at him sweetly and ask "but Sweetie, it was on your list! HOW on earth could you overlook it?"
I unfortunately have no suggestions for you. Other than write lists. I am a list maker. Keeps me on task from day to day. Helps organize the kids' schools, their activities, and my own personal things to do.
Man, I just reread this answer. I sound like a crackpot! =) Good luck, VM!