Being of the male persuasion, I have never dealt with this, but it must be fascinatingly odd and exciting and scary and wacky as heck. We mens's go through small hormonal 'stuff' now and then, and probably whine more than we should, being weenies compared to you that actually do the birthing. Pretty sure if I was vacuuming to cover the stress time of wonder, I'd wear ruts in the hardwood. Can't imagine what it's like as the one that actually has to go through it all for nine months, and the anxiety waiting for the tests, etc. Rather wild indeed. Though women friends I've known all have said they knew pretty much right away. Guess it's that biofeedback of the body, if you are in touch with it.
Now you just gotta quit being so fertile. As if that's a possibility. Can you tell I'm clueless about all of this, and winging it here? Maybe I should stick to cats ( :