I had the same problem with ortho-tryciclin. The lower estrogen made it a little better for me, but my cycles got so out of whack I was having my period every two weeks. I am now on the depo shot and i've had no yeast infections for 3 months (woo hoo!) and have my sex drive back. Unfortunately getting into depo can be straining in the beginning.. I bled for 6-7 weeks straight, but I haven't had a period in almost a month and a half, just spotting now and then.