Intrusive thoughts

Does anyone suffer with horrible thoughts. Myself and my partner have been talking about trying for a baby together. This would be my third pregnancy, but second child. I’d love to have a little one, we both would but I keep having horrible thoughts and it’s causing me anxiety. I keep thinking I’m going to die and I’ll never get to see my children grow up and then I worry I’ll never get to see my child now again. I know it’s stupid but I don’t know how to stop panicking.

Any tips ladies?