Started spotting a week after my period on the 28th. ..light pink then the week after it has turned heavier but it bright red blood with a smell to it, done a couple of pg tests all negative I'm not due on for 9 days (23rd April)?

Irregular periods. Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections ; hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test . There are many options available to help regulate the menstrual cycle. Schedule a visit.