Very weird mark on upper thigh

So about six months ago I noticed one day I had a perfect square bruise. Didn't have any reason for a bruise to be there. So it stayed inflamed above the skin for about 3 months and a dark purple colour. After three months the skin scabbed off and left a perfect square mark with the center being a white ish colour. Now I am getting another one right beside. Sorry the picture is not clear at all it's way more noticeable in person! Anyone have any ideas?? Tried lots of thingsX, essential oils, bio oil different cream. I'm just concerned that I'm getting another.