Am I just being mental orrrrr ?

So I’ve been with my partner for over 2.5 years, he split with his ex a year prior to me, he told me it was mutual but I’ve since found out it was her decision. When first talking to him he mentioned her a lot, until around 4 months in when I said how weird it was. So fast forward to now, I am carrying his child, the first and only thing he has ordered is a leopard print baby grow and was all like how cute is this blah blah.. I canthelp but have the image of his ex in leopard print dress/tops in which I have seen on social media... like is pregnancy just getting to me or is that weird on his part? I just don’t get why he’d choose leopard print 🤣