First month TTC, went by my fertile window in Glow

Gretshen • 👧🏻#1 my princess is 2 1/2.👶🏻 #2 twin boys are expected on May 12th, 2017.
First month TTC, went by my fertile window in Glow. Had cramping the day I thought I conceived and the day of implantation. AF due yesterday 9/15, took a pregnancy today it was positive. I have had 3 miscarriages very early on around 4-5 weeks after a positive pregnancy test, had a successful pregnancy almost 2 years ago with the help of blood thinner injections troughout the entire pregnancy. I started the injections 2 weeks ago hoping this pregnancy is a success. I'm hoping in God everything will be okay.