7 days spotting - no period

Sierra • With my love since 05 • 04 • 2018 ❤️

I started spotting last Friday and I was suppose to start my period today

I’ve experienced cramping one day and nothing now and I only see red/brown blood when I wipe

I am on birth control and I know it’s normal to spot on it but in all 3 years I’ve been on it this hasn’t ever happened

What should I do? Does anyone know what’s happening or what’s going on?