This is about work and preparation toward mental wealth. What in the world is mental wealth. I think I am wealthy and so I am? or Is it that I have a wealth of ideas on the mental plane today? Lucky ideas?
The pigs are in the enclosure of your consciousness and cannot again become submerged in the Unconscious. Could be that it is time for some new ideas. If the old was not working well, time to make some changes.
You tell us that we can do it and be successful. It is the peak of our mental endeavor, knowing a spiritual work is half completed and knowing that important factors are working for you.
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.
You are loved and blessed.