Am I giving mixed signals with my on-line behavior?

I'm getting a bit paranoid... At my work computer I had never done anything remotely girlish, as I deal with... let's say, heavy equipment sales.

But recently our local ad aggregator started to show me "interesting" ads on several news sites. Ads like makeup, cosmetics clinics, dress shops, high-end lingerie... And "coup de grace" - just before the New Year I was offered new nice breast implants for just 2000 USD... At my work computer... Whrere others can see it :-)
And I am quite deep in the closet... And I don't think I ever done anything... revealing on any of my work computers...