Anxiety and insomnia

Hi-I’m about 4 weeks exactly. HPTs all read positive. My first blood draw was low (hcg 25) going back today for the second to make sure it’s rising but I’m so scared to get my hopes up. The nurse was like “well it could be a chemical pregnancy”. I have symptoms nausea and reflux, sore boobs, fatigue, anxiety, stretchy feeling but not cramps, insomnia, lower back pain, and pretty sure I experienced implantation spotting. What do you guys do to manage anxiety during first trimester? I keep freaking out that it’s not going to stick or that I’m not really pregnant. I feel like I’m going nuts and it’s not sinking in.