Bruises!!!!

So for a while now I’ve been getting bruises mainly on my legs but sometimes on my arms. Well I don’t hit myself anywhere I know for sure because I’ve been trying to keep track since this has been happening for some time now. I had asked my doctor long ago when this was first happening but she brushed it off. I felt like ok if she’s saying it’s nothing it’s nothing but I don’t know does anyone else get this as well have you been told something different....I just don’t know I keep seeing them and when I push down on it it doesn’t hurt it’s just there and it’ll go away after maybe 2 weeks but I have a few and they just keep appearing.