Stay positive! There's nothing you can do to prevent it if something's wrong, but I had mild spotting for weeks and then at 10 weeks found blood in my panties and rushed to the ER. I was sure we had lost the baby. I was diagnosed with a threatened miscarriage, too, but here I am 15 weeks with a perfect baby. <3 Some women spot early on, like I did. And you may be early enough to still have implantation spotting, or possibly a little bleeding as the placenta takes hold, too.