C.W.
My daughter went through a phase, after my son was born, that we call her "angry at mommy " phase. I was always careful to never use her brother in any of my excuses as to why I couldn't do what we used to do together (although the attention he required from me was clearly the reason) I wanted to make sure she never held any negative feelings toward her baby brother. She in turn was very upset with me. This lasted about 4 months. She would argue, pout, and scream at me often -it was not easy to take. I'm not sure if it was because she learned to like playing on her own more or if I finally started to get the hang of careing for 2 small children, but it did get better. (I did cry alot because I felt so guilty that I couldn't do what I used to & I couldn't do all for my son that I did for her...... Raising 2 is a whole lot different than raising 1.) I believe part of what helped was that I learned how to include my daughter in the caring process for my son. (She would help by getting baby stuff, rubbung his back with me, singing to him as I fed him, drawing him pictures to decorate his room) My husband also put forth a much greater effort when he came home from work. She & her dad grew very close during that time. I have to admit in one way it was hard seeing her run to Daddy when she was hurt but, in another it was something we all needed. We all get along well now. It will happen for you too. Maybe you have a friend or relative who could come into your house every so often to play with your son & do "special" tings with the big brother. I know right now it is sometimes hard to think what needs to be done next but be creative & call in support & your family will be happy in no time.
One last hint -- don't feel guilty if you put on "Bob the Builder" & doze off & on while you cuddle with your son on the couch. There were a few afternoons that I would put the baby in for a nap, set up the baby gate(so we were "stuck" in the living room) fill Faith a sippy cup of milk & give her a cup of cheerios, turn on "Barnie", put my arm around Faith & doze off and on for the next half hour. Sometimes those dozes were the thing we both needed. She got her needed "touching time" & I got my needed re-charge. Good luck -- it does get easier.