Picking a name

So I’m 16w 4 days. I’ve had two miscarriages prior to this and this is the furthest we’ve ever gotten. Anyway, I wanted to pick out names already and my husband wants to wait til we find out the sex on 3/15. I guess I’m a little hurt. Like what’s wrong with doing it now? Or at least discussing it. Like having a boy name and a girl name picked out. I’m not sure if maybe it’s because of the miscarriages he’s just being really cautious. Can anyone tell me if your significant other has been similar? Maybe it’s a guy thing. I have a whole list of names already but he just keeps saying he wants to wait. Is this normal? I know for women we think about these things from an early age but I just would expect him to seem a little more interested in names etc. I’m also concerned we won’t be able to agree on names Bc we have different tastes in things. I would love to hear anyone’s input on this if you have experience with this! Thanks!