Should I be concerned?

Alisha

I went to the bathroom earlier and had a drop of blood that was almost to light to tell so I wiped again and got a bit of a darker one. I’m 15 weeks I have not had any bleeding at all so far except now. I don’t have cramps but I have a pinching, poking feeling in my lower abdomen. It also feels like I had done an ab work out for like an hour but I hadn’t done a work out. I just relaxed majority of the day. Should I be concerned or is this normal? It’s my first pregnancy so everything is like new and scary