Why is my period late!?

I got off birth control pills in the beginning of January because I didn't like the way they were making me feel. I started my first period off them on February 1st. Then my second period came right on March 1st. Now it's almost April 6th and I'm pretty concerned! I'm sexually acfive, but my partner and I use condoms. My period is usually like clockwork, right on time. I have some excessive white discharge but no other period symptoms. Thoughts???