I was doing so well for awhile with SD and all my resentment issues, but they seem to have resurfaced and my DH just thinks I am "being emotional"

I resent DH for thinking I am "just being emotional"
I resent DH for thinking that when I presented him with a valid statement that it was an irrational concern and I was just trying to start a fight.
I resent DH for saying that my concern was invalid and that he knew better, without really listening to what I was saying, He just shut me down.
I resent SD4 for telling me that because we don't have any pants for her (they all just disappeared after she went to school) that we "will just have to go to the store and get some more"
I resent DH for going to the store to get more
I resent SD4 for getting her 15th set of markers because she can't keep track of them and "the dog keeps eating them" and we "just have to go to the store and get some more"
I resent DH for going to the store and getting more.
I resent that I am the bad guy for thinking it was generous of me to spend $200 of my hard earned bonus on winter apparel for SD4 and it keeps disappearing, but BM should not be held responsible- despite the fact that it is her kid, that she rarely sees. She makes decent money and has few bills- but spends her money on toys and mani/pedis for SD4 (yes you read that right) and vacations, and lunches with her friends- instead of spending it on clothing for her child.
I resent that if we have a swap on the weekend we MUST pick SD4 up by 11, but BM will show up whenever she damn well pleases- usually after a leisurely lunch with friends and having made SD4 wait excitedly for her, for hours- asking Daddy if they can wait outside (a few hours passed). How sad is that? A child waiting outside expectantly for their mom who can't be bothered to show up?
I resent that when I go out to purchase things for myself and SD4, I try to include DH, but despite how many times I tell him one of my top "languages of love" is gifts- he leaves me out.
I resent that I take SD4 to school every morning, make sure she is appropriately clothed, make sure she has the right balance of positive reinforcement and discipline, make she eats healthily, and that her dad responds to her- but I still don't hear a peep of gratitude from either.
I resent that while SD4 seems to be clinging to me lately, I still have to constantly hear about BM, literally every other thing out of her mouth is "My mommy ........"

I am bitter and resentful this week.... maybe I am PMSing- but I still feel it!!!!!! Also, I am completely stressed out, in my line of work, they trade us around like playing cards. I started at a new place in the height of Christmas. I was at my last one for 2 years, and now I have to make a new work home.. whatever.

Also one of my dearest friends is in the early stepmom phases- a year into dating a man with a kid- she still thinks she will love her as her own one day.... Oh, honey......