Heaps of random bruising? Should I be worried?

Si

I was just shaving my legs in the shower when I noticed this series of bruises on the back of my lower leg.

Now, I’m used to finding random bumps and bruises on my shins/knees/elbows as I have been known to bump into things (and all the ladies in my family seem to bruise easily) but this is on my calf where it’s virtually impossible that I’ve hit it into something and there are quite a few!

Any ideas what could be the reason? Should I be worried? 😰