I didn't want to wear maternity clothes right away because I already felt gross enough. I just felt like the maternity clothes maximized my leftover flab.
DS was born in May, so I didn't have any maternity shorts or anything. I bought just 1 new pair of shorts that were bigger than my pre-pregnancy size, and then paired that with different tunic tops to kind of hide the leftover muffin top.
When I was sitting around the house, I was always in sweats that were comfortable, and I was fine with that, but I know a lot of women don't like to lounge in sweats all the time.