Pregnancy after chemical

I had a chemical pregnancy last month. My tests barely got dark was days of extremely faint lines. I have since found out I am pregnant. So far so good,y 9dpo line is dark and they continue to darken as each day passes. I’m just so worried that I’m going to miscarry again. Is there anything I can do to try and promote a healthy pregnancy? I’ve been taking multivitamins since last pregnancy, try and eat healthy, reduce caffeine but I’m just so worried