I couldn't read and run either. First of all, ((big hugs)) . You just found out so you will no doubt start to feel better as time goes on. Since you say you are "depressed", I would consider seeing a therapist to work thru your feelings, esp. the ones where you feel like a failure and the "grief" feelings from letting go the DD dream. I think a LOT of people here can relate to that.
If you don't like football, then I wouldn't have your boys do it unless they REALLY beg you for it. I know a lot of boys who are more artistic and are into crafts and music. You can certainly look into art and music lessons - they can start music lessons with you as young as 2 years old and start an instrument around age 5 or 6, like piano. I also know boys who are into figure skating ansd no, they're not gay (not that there's anything wrong with being gay, but ykwim)! And a lot of boys, including mine, enjoy cooking and baking!
As for clothes, try to find colors that are a bit different for this new baby - maybe some turquoise, pastel colors? And as a woman, treat yourself to girly clothes! Have nice maternity and newborn pics taken, different from the ones you already maybe have for your previous boys.
As for the negative comments from people, I alwways have found them inappropriate, rude and insensitive. It would be easy to tell you to just ignore them (because that's what they deserve), but I know it's not always that easy. That's something you can work on in therapy - to not be as sensitive to other people's opinions. But to be honest, I would avoid people who are insensitive like that in general. Who needs to associate with rude people who have no respect for your feelings? You can also give them good comebacks to put them back in their place, like some here have suggested in other threads. I hope you do find other boy moms to become friends with though, because that really helps. Being isolated is always a big no-no for people who are depressed.There should be a GD group for people IRL!!
Finally, I know the reasons are probably financial, but have you considered HT or adoption, esp. since your DH is also wanting a girl (which is probably making it even harder on you - my DH is into sports ans boys stuff so it's nice seeing him fulfilled and does make me feel better)? As a pp mentioned, going from 4 to 5 kids is not a huge step - a large family is a large family, and you'll already have one with 4 kids. Since your GD seems pretty intense, it's something you may want to look into, but again, that can be discussed in therapy. Also, in terms of volunteer work, you could also look into becoming a big sister if you're looking to develop a bond with a young girl (and HT and adoption are not in the cards for you).