Help! Random bruises...

Kenddy

Three days ago I was changing and noticed random tiny bruises on the same spot of both of my thighs and don't know what caused them. 3 days later, they haven't faded, in fact, I think they might be a little lit worse... Do I need to worry? What could this be?

This is the first day

And this is today

This is how it looks today on both thighs