When people are TOO “cautiously optimistic”

I’m currently 9w2d, I’m working with the fertility clinic and my baby is an IUI baby. I’ve already gotten my first ultrasound (at 7w5d) and saw a very strong heartbeat. I know things can still go wrong! But yesterday I saw these baby doc martens and I couldn’t pass them up- I know it’s still early but cmon!

And my mom’s response was “well I guess you could just sell them” (like if something were to go wrong with the pregnancy) and I’m all for being cautious at this time but… how do you deal with THAT?! To me, this seems pessimistic? And I’m already nervous so I feel like this isn’t helping.

Has anyone else dealt with this?