I’m not sure what this could be

Brittany

So I’ve been on nexplanon and have been for two and a half years. I maybe have one or two periods a year so obviously I can’t keep track of anything. So my stomach feels tight and a little firm, not sure if it’s just because I’ve been working out or what. But I think starting yesterday every time I use the restroom, I have a teeny bit of blood when I wipe. I’ve looked up IB and it resembles some of the pictures. Just not sure what to think. Obviously the answer is to take pregnancy test and I will buy a couple at the dollar store in the morning. Just curious what y’all think. I have heard cases on women becoming pregnant on nexplanon but it’s not common as far as I know.