alright so I quit taking birth control last month. i was on ortho trycyclin. I was on it for not even 6 months. I had my cycle. Then in between I am thinking implantation? I have no idea. Then I started again for a few days but lighter than usual but cramps heavily. lots of bloating. now, on to this month..i haven't had a period. it first predicted the 12th. So I had to keep moving it back since I haven't started. it's now the 20th... what should i do? opinions are grearly appreciated.