A little anxious vent

I hoping there are others that have similar feelings/stories to help me calm my mind

I tested yesterday as my period is late a few days and it was positive. I was so happy to see the lines but 10 minutes later the uncontrollable dread of anxiety hit me and I sunk.

This would be my 4th confirmed pregnancy but unfortunately the previous 3 never made it past 6 weeks (2 early miscarriages and an ectopic) I'm so incredibly nervous about another loss that it is having a serious impact on my normal day to day things.

Has anyone else experienced this kind of heavy feeling and was there anything that helped it pass for you? I already feel like any symptoms I had have gone and I feel like im just waiting on the worst.