tubal,periods,pregnancy...help

Je

So I had my tubes tied last year in june. my cycles were like clock work up until this year in june, then they started to get irregular and lighter and then random spotting. Ive had my thyroid checked, its fine, I havent really changed too much with my way of eating and exercise. As of this month, I had an 8 day period and the rest of the days Ive been spotting with lots of egg white cm. what gives!!?? I get pregnancy symptoms and as of today, I feel like I have some pms symptoms. My doctor wants to have me take the pill but me and birth control dont mix. Anybody have issues like this?? or anybdy get pregnant with tubes tied and were your cycles odd??