anxious about my bfp after miscarridge

so on july 21st i found out i was pregnant 5 days later i had a miscarridge at 5 weeks . i found out 4 days ago that i am again pregnant and was suprised at how bright the test were shinning at me. im feeling very anxious at this moment in time thinking the same thing will happen. i dont feel how i did last month with af pains a week before our loss or constant headach. does anyone else feel like this when they find out they are pregnant and worry that everything will go wrong constantly. im hopefully everything will be ok this time around as dont think could deal with the same thing happening again so vlose x