Scared of miscarrying

Hey all! So my hubby and I have been trying for 8 months to get pregnant, and we finally got a positive urine test!!! YAY!!

I’m also SO scared of having a miscarriage. Are they common? How will I know if I have one? After how many weeks until the likely of having one goes down? I’m going to be eating all natural food, no caffeine, low sugar, etc...

My cousin has had a few miscarriages... they’ve unsuccessfully been trying for years. Any advice or info would be great. Thanks!