Constantly paranoid

I feel as if I’ve been holding my breath with every day that passes 😅 I have dealt with infertility my entire life and had tried for a baby for 2 years in my previous relationship. I always knew I’d have fertility issues though because my doctor talked to me about it when I was younger and told me I’d likely need to see a doctor when I was ready to conceive. I know there’s a chance it also could’ve been my partner but when you hear that sort of thing from youth you focus solely on yourself being the problem. I also look at that as a blessing because that ex turned out to be a physically/verbally/emotionally abusive manipulative piece of 💩. Now here I am 8 weeks pregnant conceived naturally with the love of my life the first month we stopped preventing and it just feels absolutely unreal! I didn’t even cry when I had my first ultrasound and heard the heartbeat I just got wide eyed because it was really real. That was my baby right there heart beating strong. I’m beyond excited but I’ve just been so nervous because I have all these what ifs…. What have you all done to ease your mind? I work from home and he works during the day so I feel like I’m constantly trapped in my thoughts home alone. I’m not scared but just incredibly anxious and I don’t know why.