Insomnia issue

I’m 5-6 weeks pregnant, and I’m already 40 hours awake... no sleep at all, I never have this difficulty before. I’m just not able to fall a sleep... really confusing for me is, that I’m not sleepy or tired at all. I even try to walk a dog for 8km today and I was just little bit tired on my way home and once I was home I felt like I just woke up 🤦🏻‍♀️ only one who slept whole day after that walk was my dog😂

And believe me, I’m not sporty person at all. Is here someone with the same “issue” or someone with an advice what to do?