Last year I had my first baby boy in the beginning of May. Super excited, had to have a C section (terrifying) and Now I think I may be pregnant again.

Back in July I got the nexplanon implant and by November/December was hardly having a period at all. (Though it started back up in July.) About 3 weeks I took a pregnancy test, just to make sure I wasn't pregnant, it came back negative and that night I started spotting, however, it wasn't normal red blood, it was thick old looking blood and it went on for 3 days, stopped for a day and started for a couple hours the next. The past couple days I have been peeing every couple hours during the day and when I wake up in the morning I have to pee really bad.

Is there any way I'm pregnant? I mean, nexplanon is supposed to be 99.99% effective so am I really that .01%?