Feeling less excited in 3rd trimester?

Has anyone else experienced this? I’ve noticed an overall shift in how excited I am for my baby since I recently entered my 3rd trimester and am feeling bad about it. My baby was unplanned and is my first, but I knew right away that he was meant to be and accepted him along with my man accepting him and being so excited too. Everyone in my life has been supportive too, the only hiccup has been an abnormality that he had on his 20 week anatomy scan. Ventriculomegaly, but it’s mild still so far. It hit me really hard when I found out when they finally told me like a month or so later. I started seeing a high risk doctor and everything else seems to be normal so we’re hoping either it’ll resolve on its own before he’s born or that it’s just “his own variation of normal“ and that it won’t affect him. I’m thinking maybe that could be why I feel this way? Everything isn’t perfect the way I imagined it’d be earlier on in my pregnancy and I think it might have me a little depressed. Anyone else going through something similar?