:?
This is a really strange predicament to be in.

For the last 2-3 years, I have noticed that I have freckle-looking things on my inner thighs (just the left side). They aren't raised at all, in fact, they just look like freckles. Weird thing is, they just showed up one day. It was around the time I started using depo.

Now, the weirdest thing about these spots is that they will get darker or paler according to which phase of my cycle I am in. That freaks me out. I thought they might be an std, so the last time I was at my gyno, I asked about it. She said it was nothing, but I am still worried. That can't be normal.
The only way they are different from surrounding skin is that they sometimes get a little 'ashy' when my skin is dry.

Does anyone have anything like this? I am really worried that it might be skin cancer or something.

Btw- 22 years old, great health except I smoke, and tested 2 years ago, only 1 partner since.