Possibly pregnant

Anna • Had our beautiful miracle June 28th❤️

So we weren’t trying for a second pregnancy and I thought I was starting my period bc I had spotting the last 3 days (brown so like old blood). Today it wasn’t really there and I didn’t think anything of it. My period was set to start tomorrow according to my <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a>. I started to feel very sick today and just didn’t feel right so I grabbed a digital pregnancy test and it came back pregnant. So my question is, could it be wrong or can it be a chemical pregnancy? I had one a little over two years ago before my daughter but it was the faintest line and then my period started heavy. My husband thinks it’s positive bc if it was chemical a digital wouldn’t be positive. Sorry for the long post. Thanks in advance for responses.