Birth control pills side effects symptoms and conditions

I started taking Yaz for about 3 months and couldn't tolerate the daily spotting and severely itchy skin from my knees to my ankles. I switched to Yasmin and though I don't have as much breakthrough bleeding, it still occurs daily a week BEFORE my real period. I have very little to no sex drive and I have to use Aveeno 24 hour anti itch lotion immediately after showering (I've lived in a desert climate for over 10 years now and have NEVER depended on anti itch lotion much less regular lotion since starting these pills). It was so bad a couple of nights that I took Benadryl to get through the night. After reading the posts from others, I'm thinking that I must have an allergy as I, too, have constant post-nasal drip in addition to the itching. I have also noticed more hair shedding but luckily for me, I have thick hair. The only benefit is I don't seem as moody as with other birth control pills and have kept my weight somewhat normal despite not exercising and overeating on the weekends. I am going to my PCP to change back to Ortho Novum although I dread the moodiness that comes with increased estrogen. Why can the drug companies come up with incredible drugs like Cialis but 30 years later, we still have @$#! for birth control pills?

Side Effects: Yaz -- daily breakthrough bleeding
Yasmin -- breakthrough bleeding 2-3xs a week
Both-- severely itchy lower legs, constant post nasal drip, hair loss, severely decreased libido, occasional leg cramping