The pregnant mouse is the card of poverty: poor as a mouse. It is also about your needs being met.
There is also emotional stress and the feel of threat (you might feel very small in a much larger world). Are you focusing on lack and in need of support?
The mouse also tells us to be patient. The seeds are planted and will take some time to develop and be delivered, like a baby.
The Self tells us to look at the big picture. Getting perspective is very helpful when we are in a fear or panic mode.
Are there invisible forces helping us now? Pregnant Mouse would indicate a lack, but there are 2 inf the front and 2 in the rear. Better some than none. Self says to see the big picture. Call in the cosmic streams of energy and be healed.
You are loved and blessed.