Got my bfp now having major doubts


We have been trying for 6 months. I started spotting around 9dpo. Now 11 almost 12 dpo and still spotting. It get goes from light to medium. I got my bfp at 10dpo (even on digital) I have zero faith this pregnancy is going to stick. I feel like AF will show up soon and my dreams will again be crushed. 😥 I just wish if it is going to happen it will and we can try again next cycle. I just can't see spotting this long and it be viable.