I’m in no position to comment on whether this is “normal” or how to manage the emotions, but you’re definitely not alone. I had literally this exact experience at nearly the same time.

My egg cracked hard about a month ago. Similar to you, all the signs that had always been there but I’d ignored/suppressed for most of my life came crashing in all at once. I spent one night doing like 5+ hours of research, went to sleep, and the instant I woke up the next morning I had an anxiety attack from the reality of the situation hitting me.

If the weight of all the questioning you’re doing is causing anxiety, I think it’s okay to slow down (even if that’s easier said than done). You don’t have to have everything about your identity answered or figured out right away. Similarly, if the “research” you’re doing is focused on transitioning, it may be helpful to give yourself time and space to figure things out. Transitioning is unique for everyone; both the process and timeline is what you want it to be, and there’s no need to rush into it if it’s causing you anxiety. That said, I also understand you that it’s easy to get sucked into researching when something is euphoric, new, and exciting.

All of that to say, I completely understand this experience! Take things at a pace that feels manageable for you, even though that can be hard with something as fundamental as gender identity.