Dose anyone have a clue what this is?

If anyone has any ideas of why these would just appear I would love some advice!?! They just came in over night they don’t hurt and look like spotted bruising. I have pcos and have been having extra pain and weird spotting so will be making a appointment for that soon so I’m not sure if it can be related to something being wrong? I have cancer in both sides of my family and pretty extreme pcos so my chances or quite high so any time I start having issues with my ovaries or weird problems on top of extra pain it really worries me so any ideas would be helpful!

(It is located under my arm)