When I was in America there were constant adds running about the dangers of using 'Diane' and another one. I tried Diane for the acne reason (and for contraceptive) in my teens and I had lots of problems while on it, I lasted 3 months and gave up. Interesting that it says blood clotting. I get thrombosed veins in my legs in the small veins. While I doubt it is related since it has been 10 years it made me think of it at first.
My sister used this contraception and after having a full knee reco ended up with a DVT..... I'll mention it to her in case she decides to go back on this type of contraceptive