Honey,
i think that you need to do some deep soul searching. Either choice you make will ultimately have a consiquence. Which ever you choose make it be for you, because you need to put you first. (just keep in mind the baby didn't have a choice in any of this)
it sounds to me that you have a good support system through your family. Keep in mind that if he is making you feel guilty about your choice that it takes two people to make a baby, and if he isn't a big enough man to accept that, then honey you are better off with out him.
As for him not talking to anyone about it, that is his own choice, if he feels left out that was his own choice. Don't let him ride you down or wear you out.
Your feelings and sanity are far more important than him being able to deal with this situation.
Best of luck
casey