I lose everything, all the time, forget things, excpt randow Jeopardy facts, lol. I seems I have very little short term memory. I used to have near asthma/panic attacks over things, but now I realized that's just me, I do too much, so that is the result.
I have tags on the cages-bred, nest, due,born, and for litters, color coded.
I have a whiteboard in the barn. Does, buks dates bred/due/ kindle/how many.
I have a chart on a clipboard, same, plus saved at 8 weeks/cull/keep.
A calendar in the ped book.
Kintraks, though my lap top is still down, so livstock manager app on the tablet.
Google calender on the phone
And still I forgot when I bred Erin, I bred her on 5/6, but checked on thee 16th and she did not take. I know I bred her after the others (14th), so it had to be a date after the 20th. 10 days ago I put the nest box in and she made the nest the sam day. I palpated and I could Feel kits Moving, so I knew I was within 10 days of kindle, that was my best estimate. I had been staring at her for 10 days, thinking I had imagined (but she made a nest) and this morning shee kindled 7 live kits.
All this to say, try palpating, if you can feel individual kits (I can count mine) put the nest in.