do you think there's still hope?

Mexiflower • Hi im Christine. and we are trying for our last baby:) i have a girl12 boy10 girl5 boy4 girl1

this is my THIRD pregnant in 7mo! they other two I lost before 6wk. I got a POSITIVE ovulation June 20 and a bfp June 30. on July 5 my numbers where 230ish(I don't remember) on July 7 I was 548. on July 11 nothing in my uterus. July 12 blood work showed 4000. more old today. could I have implanted late? or ovulated a few days later? I just want this one to stick. still very crampy gassy and was sick Saturday July 7 nothing until July 13.