Faint positive and now bleeding

Lisa

Hello wonderful ladies,

I got a faint positive this morning but is was absolutely there ! I tried to upload a picture but it's not working. Anyways so I was thrilled this morning and then shortly after I started spotting . It started as light pink, now it has gotten a bit heavier and is brown. I'm still three days before AF . Anyone ever have this and still had a successful pregnancy ? I went from being so excited to scared in a few hours. Any advice would be great. Thanks!