Struggling with anxiety

I'm 5 weeks 2 days today. Im desperate to get to the safer 12 week point. My partner and I only met a few weeks back so the news of a baby was amazing but scary as we don't have much history behind us! Thankfully he was desperate for kids.

At the moment we live apart, an hour away, we see each other at weekends but will be more at some point. I'm constantly worrying he will change his mind about wanting me and the baby. I feel like I need constant reassurance and if I contact him and I don't hear back straight away I get paranoid. I hate Watsapp as you can see if someone has read your message or not.

He said he's with me all the way by sometimes I feel he doesn't check up on me enough. Stupid things like not sending a good night text or getting back to me if I text him in the morning. When I'm with him he's great. I'm not ready to move in with him yet as I have work to sort out and I don't feel ready. Why do I feel so paranoid and anxious and scared.

Does anyone else worry about every single thing?