I think being pregnant and overwhelmed are synonamous. I blame the nesting syndrome for that. Do what is most important for that day and don't feel guilty for leaving things undone. You have a precious life growing inside you who needs you most of all. Have you thought of container gardening. I started that last year and it went well so I have expanded it this year. Right now I am growing cantaloupes, collards, peppers, tomatoes, peppermint, chocolate mint, spearmint and more; all in containers. I use molasses tubs and 5 gallon buckets for that. So now the first thing to do is to breathe in deeply, breathe out deeply a few times and then hug that beautiful baby and talk to him for a few minutes about what you are going to do today, which includes some pampering for yourself. We all love you and want to help you in whatever way we can.
btw; post pictures of your new baby when the time comes!!!