Hi Lane2800,
I just realized, that while we are making jokes about your horse being pregnant we know what that means and what we need to be ready. I then realized that you probably don't.
Looking at the photos of your male, he does indeed look like he is pregnant. Seahorses have short gestation periods, for the most part I believe a couple of weeks. You need to make some decisions quickly if your male is carrying fry.
Your first decision is, do you want to try and raise them or do you want nature and your filter, to run it's course. Sounds harsh but it's reality. Seahorse fry are difficult and time consuming to try and raise. I'm not trying to talk you out of anything but just trying to let you know that you will be in for a lot if you want to give it a shot.
If your male is pregnant and you are going to try and raise them, you are going to need to do a couple of things to get ready. You are going to need a fry tank. Usually a 10G works well.
You will also need to hatch baby brine shrimp. Not difficult but will take some set up.
If you choose to try and raise them, you'll have to do water changes on that tank often, probably a little every day.
If you decide you want to try and raise them let us know so we all can start to post what you'll need to do to get ready.