I've been getting cramping as if I was meant to start my period for 3 days now and nothing has come up. Instead, for a little bit longer I have experienced a really heavy discharge flow. Any ideas what this could be and what I should do? It's odorless and at a normal thickness and is normal White so nothing out of the ordinary.. Thanks.

Is pregnancy a possibility? That would be the first consideration. Could be you are just late, but if pregnancy is possible, try a test.