MISCARRIAGE after DEPO?!

JZ

I know this is long but im hoping someone of you can fully read this.Im going to try to keep this short so I don't bore y'all and I can get some advice. On August 2017 I had my first Depo, so my 3 months were up on November-Dec. I didn't get the shot again but I was still sexually active. DEPO WAS HELL FOR ME! on December i took a preganacy test bc i was producing a bit of breast milk(odd). The test came out negative, I THINK. Today while on the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> I saw someone post a test rssult with 1 line ans a slightly faint line, I thought. could that was negative. But people commented saying it was +. Now im in doubt, i dont remember 100% if my test had the second line fainted. I didn't get periods for 2 months, but I began to bleed Dec.27 2017. The bleeding stopped Today January 7, 2018. During this time I had some very big blood clots but I assumed that it was normal since I didn't have a period for a while. Could this week's blood clots be a misscariage?? How can I find out if I was in fact pregnant without knowing post possible miscarriage??