Any support/suggestions on not worrying about everything?

I previously had a missed miscarriage in July and had a D&C. Obviously it was heartbreaking and not something I think anyone can ever fully get over but I managed because luckily I had a good support system around me. I recently found out I was pregnant again on the 10th of December, I was so excited at first and I still am but it’s so hard to keep positive after going through something so hard last time. Every pain or any slight change in my body I worry. I had an early scan the other day and they didn’t see much as I’m only just 5 weeks, I have another scan on the 1st. I just wanted some advice from someone who might have been through something similar and is currently pregnant. Anything would be appreciated.