white spot on tip of nipple?

I have some really weird white spot on the end of my nipple.. i have only just noticed it so unsure how long it has been there for. Has anybody had this before as i'm really worried? 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors