Am I (23F) overthinking about him (31M)?

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TL;DR

I’m dating someone new after coming out of a toxic long-term relationship, and I’m being extra cautious about any changes in his behavior. I know I need to trust him and work on some things myself, but I also want to trust my gut feeling. I plan to speak to him directly about it, but any advice or opinions would be really appreciated.

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I met this guy about a month ago, and we instantly hit it off. Our first date was at a restaurant, and we had a great connection right away. Since then, we’ve been texting every day, and he’s been really affectionate and consistent. He would always send me voice notes when he was heading to or from work, and the way he texted me felt really loving.
On our second date, we went for a walk and just talked. I went to Paris for a weekend to visit my cousin and he even offered to drive me to the airport. We texted the whole time I was away. When I got back, we met again, and he came over to my place. We got intimate. He continued being loving and thoughtful. He even came over when I was on my period, and we still spent quality time together, despite not being able to be physically intimate.

About a week ago, he had a car accident and his car was totaled. Fortunately he had only minor injuries, but he still came over to see me just two days after the accident, even though he was visibly in pain. Since then, though, things have been a little different. He’s still been affectionate, but there’s been a slight distance. I know he’s been busy dealing with the aftermath of the accident so I tried to give him space. We still texted every day, but I couldn’t shake the feeling that something was off. He wasn’t as enthusiastic, took longer to respond, and I just felt a shift, even though he was still being loving and nice. I tried to be there for him, offered help, and asked how he was feeling, but he didn’t want to talk about it much.

Two days ago he came over again and we had sex for the first time for real. He came all the way over via public transport, which was almost an hour’s journey and I really appreciated that he still made the effort to see me. Afterward, we watched a show and cuddled he left early because I had work in the morning.
This is where things started to feel weird. He didn’t immediately text me when he got home like he always did. I sent him a message asking if he made it home safely, and he responded sweetly, like usual. He wished me goodnight, but then the next day… nothing. He was working a night shift after being home for a week and he used to text me even when he was working, but this time, I didn’t hear from him at all.
I’m also wondering if maybe getting intimate this early was a mistake. From the beginning, he reassured me that being intimate wouldn’t change things and that it would make him want to get to know me more. He even said he was looking for something serious, which is exactly what I want too. But now, I’m feeling confused.

I know this might sound like small things, but he logged into his Netflix account on my TV, left his toothbrush at my place, and his cousin even drove him to my house. He’s always given me the impression that I could trust his words, but now I’m starting to feel skeptical.
Am I overthinking this, or is there something I should be worried about?

I asked him why he didn’t text all day. He said he was just super tired from his night shift. He responded really sweet and loving, asked about my day, sent long voice notes.. I’m starting to feel like he might be getting comfortable with me and isn’t putting in as much effort as before. Just to give you some context, I’ve been in a very toxic and abusive relationship for 3 years, so this is the first time I’ve felt so valued and loved and I really don’t want it to end. That might be why I’m feeling extra cautious right now. I need an outside opinion on if it’s me or him.