My pregnant wife is always horny and I'm running out of excuses. Am I wrong or is this just gross?

Ok, so she's a bit over five months preggo. I'm not a bad guy and think I'll make a great father. I love kids and this is a dream come true. But damn it, I don't want to plow her. She's all swelled up, things sprouting and growing out of control, her once dainty feet look like ribroasts with nails now. I don't know what happened to her hormones but she always wants . Her reasoning is that we can enjoy it more since I won't be getting her pregnant. I don't understand that at all. She knows I love her, why do I have to be tortured to prove it? Besides, having with your pregnant wife or GF is like putting gas in a car you already wrecked. It's pointless, and I'd have to be drunk first anyway. But she doesn't listen and now has all sorts of wild ideas thinking I'm looking at or oogling other women, or even plowing someone on the side and I'm too tired. I just want to keep the boys under wraps untill it's safe to come out again. Am I wrong or is this normal? Something tells me Mr. Beaver wasn't nailing June Cleaver when she had her buns in the oven. We're too damned liberal for our own good when a man isn't even allowed to be repulsed by his own wife anymore. Thoughts?