Congratulations! I could see the first pic and the second is blaring! I know the feeling of fear, I just lost one and know I will feel nervous with my next BFP. I just remind myself that lots of women miscarry, and then go on to have a healthy baby after. This is from mayo clinic:
"Miscarriage is usually a one-time occurrence. Most women who miscarry go on to have a healthy pregnancy after miscarriage. Less than 5 percent of women have two consecutive miscarriages, and only 1 percent have three or more consecutive miscarriages."
So try to relax and enjoy it, take it one day at a time!