feeling too good that it feels bad

I'm not sure if anyone will understand this by the way I describe it. 

There are some things that make me feel so happy and positive that they feel almost... wrong? 

For example, autumn is my favorite season (or spring I can't decide), and it makes me feel alive. It reminds me of my childhood when I used to go to my Nannie's house for Thanksgiving with lots of family and it reminds me of the pumpkin patch I've going to every year. (I don't mention any Halloween memories because I'm not a big Halloween person). I love autumn SOO much that it almost feels surreal and eerie almost, and in a negative way. I just want to enjoy autumn in peace bro

It's the same with songs that remind me of autumn, like Luna by Smashing Pumpkins and Star Crossed by Scary Kids Scaring Kids.. Let Down by Radiohead does the same thing although it doesn't remind me of autumn. Let Down is like hopeful yet depressing at the same time and it feels sooo weird uggggh

It's like my mind can't just be completely at ease and comfortable or something?? I'm not sure if it's just nostalgia or if it's something deeper in my brain.

I didn't explain this well at all bro

Edit: I forgot to add that I'm also this way with most of Beabadoobee's songs ugggghh and any positive songs like that