Anxious in my Relationship

Hey everyone, haven’t been on this forum for a while, but I have to get this off my chest.

I have had a lot of anxiety related to my current relationship. I’m in probably the healthiest relationship I’ve ever been in for the past 6-ish months, but every time there is a conflict and my partner asks for some space, I get riddled with anxiety and ruminate to no end.

Every day I ruminate about the state of the relationship, feeling like I need to analyze every single thing to get ahead of a potential break up. I’ve been trying to just accept that if we do break up, there’s nothing I can do about it. I’ve been struggling with accepting that I’m with him today and I can’t guarantee him being in my future.

I wish I could just enjoy my moments with him while they’re happening, but I’m stuck constantly worried about the future. Has anyone else struggled with this?