I've been doing a lot of research on moles and skin cancer lately myself as it's been my most recent fear. I'm definitely not an expert and if you are worried about it, PLEASE go get it checked. Just for peace of mind. But, from all my looking at photos this weekend, yours doesn't seem to be in the abnormal range at all. Especially since you've always had it. I have a derm appointment to get checked next week - hopefully all is clear for both of us! I think it will be.