Title: [27F] [29M] I don't know if I'm unhappy in my marriage or just going through a rough season

I [27F] don't really know where to start, but I feel like I need to know if anyone else has gone through something similar.
My husband [29M] and I have been together for 6 years and married for 1 year. Ever since we got married, it feels like we've been arguing more than we ever did while dating. Some days are genuinely wonderful. We laugh, enjoy each other's company, and I remember exactly why I married him. Other days I feel completely alone.
My husband is asexual, and I knew that before we got married. I accepted that because we still had some physical intimacy every few months, and I felt emotionally close to him. But it's now been over a year since we've had any kind of sexual intimacy.
I also came off birth control, and my sex drive increased a lot. I went from being okay with very little intimacy to really craving that connection. I know he can't change being asexual, and I'm not angry at him for that. What hurt me was hearing that he doesn't experience sexual attraction toward me. He explained that it was partly because he's asexual, but weight has also come up in arguments before. I used to weigh around 200 lbs and now I'm around 135 lbs, so it's left me wondering if that played a role too. Whether it did or not, hearing that from my husband broke my heart.
Another issue is communication. Whenever I tell him something he said hurt me, he usually gets defensive or completely shuts down. Eventually, I'm the one who apologizes just so we can move on, even if I was the one who was hurt. I've realized I can't remember the last time he apologized first.
Even little things make me feel like we're not a team anymore.
Today I asked him if he was happy. He said yes, but he never asked me if I was.
That moment really stuck with me because the truth is... I don't know if I'm happy anymore.
The confusing part is that I still love him. We still have good days, and on those days I feel like we're best friends again. That's what makes this so hard. I don't know if we're just going through a rough season, if I'm asking for too much, or if I've been ignoring problems for too long.
I don't want to give up on my marriage. I want to figure out if this is something we can work through and rebuild, or if these are signs that something deeper has changed between us.
Has anyone been in a marriage where you still loved your spouse but started questioning whether you were actually happy? If you worked through it, what helped? If you realized something needed to change, what made you realize it? How did you know the difference between a rough season and a relationship that needed more than time to heal?
I'm hoping to hear from people who've been in a similar place because I feel very alone right now.

TLDR: My husband and I have grown apart since getting married. He's asexual, and while I accepted that, our emotional and physical connection has changed a lot. I love him, but between the lack of intimacy, feeling unheard when I express my feelings, and questioning whether we're still connected, I'm wondering if anyone else has been through this and found a way to rebuild their relationship