Tough situation, but I suppose my advice is that if you need to take a break from the romantic/intimate aspect of your relationship with your wife, at least try to keep the channels of communication open, let her know what you're thinking and feeling, and hear her out on whatever she's got to say. I suspect that she is in a bit of an "NRE fog" and it is affecting her judgment. Not to excuse her, but this type of thing has been known to happen. She may one day regret having neglected you now.
Sounds like embarrassment is the least of your challenges; you're trying to work on yourself as a person and cope with the possibility of a split (divorce?) in the future. You have a tough year ahead of you; you'll have to cut yourself some slack and just do the best you can.
I'm sorry things are as difficult as they are. Hope you'll get a break soon.
Love means never having to say, "Put down that meat cleaver!"