hi i ve been taking loestrin 24fe for 5 months now and last month I missed a week because i went out of town and forgot them at home. When I got back on sunday, I only had two whites and the four brown pills left so i tried to catch up on my week instead of taking the brown pills and started the new month that next sunday as normal. that same month (march) before i missed that week, i started to get my period a week before i was supposed to and it would last for two weeks. this month it is still doing this and now it burns when i urinate. i am std free, i have had the same sex partner for over a year and he has been completely faithful. why is this happening?