Red spot in white ink?

I just got my first tattoo done about 2 months ago. Everything healed normally, and I am happy with it. A few weeks ago I noticed a tiny red spot in the small white area of my tattoo. It is VERY hard to notice, almost to the point where I have to show someone where it is. I don't care if it stays or fades since it is so small. I was just wondering if anyone has heard of something like this, and if it is normal/common. I have pretty light skin, if that matters. Let me know!

Hi Ive just had my third tattoo two days ago, and I got a few red blood blisters in the pink bits of my design. Already one of them has burst, and seems to be healing ok, the others look as if they will dry up and fade. This is the first tattoo I have had other than all black, and maybe they appeared in the other two and I just couldnt see them. I dont know if it is common, but it isnt worrying me also. And I too have very pale sensitive skin!!