I have a mole on my lower back. I can't remember exactly how long it's been there, but certainly over 10 years (I'm 28). It was always oval, dark brown and slightly raised.

I wear high waisted trousers/ jeans a lot, and over the years it has sometimes bled, I assumed it was because of the clothes I was wearing always catching it.

Last year after having my daughter, my boyfriend pointed out it looked different. The mole itself is a lot smaller, but the border is the same size. So it is now essentially a small lump in the middle of a brown patch, rather than just a raised mole that it was before.

Is this reason for concern? I'm terrified of it being cancer, but I need a push to have it checked.