Re: Ice Queen
All I can say then is, good luck.
I've been in your boat, probably got a ton less action than you when my wife was pregnant. Yes, I was frustrated and miserable for awhile, but never in a million years would have thought about going out and cheating.
When she is pregnant, your needs come second, period. As a dad you needs will also come second or even third, for a very long time. You said this isn't your first rodeo so I'd expect you to understand that. If she truly loves you she will come around eventually, but pregnancy hormones are unpredictable and maddening. There is no rhyme or reason to it.
I hope for your sake that she can learn to try harder, but if you really love her you should learn to be patient and stop taking it all so personally.