K.B.
It is very common for any mom (or the parent that is most in charge of caring for the kids and the household) to forget things or not remember things minutes or even seconds after saying/doing something.
It has to do with the stress of your brain going through multi-tasking. It has been said that women are better multi-taskers then men... well I just learned that NO BRAIN is meant to multi-task, it is designed to do one thing and focus on that till it is complete and move on. When we push and try to do many different things, pushing ourselves to have longer days, get more done in a day and rushing around for everything it is actually DIONG DAMAGE to our BRAIN & MEMORY. After so much stress you will have a high risk for heart attacks, panic attacks, depression and break downs.
There are things that have been mentioned to "help" with memory BUT if you do not slow down and focus on LESS your memory will not get better. I know in today's world (especially in the USA) it is hard to say I am just going to focus on this and not do the million other things or worry about them AND that is what is leading many into an unhappy life.
Lost of memory is a sign of stress... and if nothing is not done about the stress bigger health issues might start to pop up AND your memory will not improve. Trust me I have been dealing with this for the past 4 years, trying to work full-time be a SAHM, taking online classes, involved in various volunteering things, cleaning the house and cooking dinner every day! My body said ENOUGH and I started to get panic attacks and black out, the past 6 months I have had to de-stress my life, do less multi-tasking and I am only 28!! Now this may not be the full cause of your memory retention but will be a factor and MOMS need to wake up and stop doing so much and multi-tasking.