Watery discharge and nausea?

So I had my last period on April 6th thru the 9th and I have already ovulated this month, or I should have anyway. I'm on day 19 of my cycle and I had my normal stretchy "fertile" discharge and cramps I usually get during ovulation on around day 11 of my cycle and it went away but now, for the past couple of days I've been really nauseous and moody, almost like I am about to start my Period again but it's too early. And my discharge is clear and incredibly watery, not stretchy. Like literal water. And this is tmi but every time I use the restroom it takes me forever to wipe because the discharge just keeps coming. And I'm cramping really bad but its not normal PMS cramps that I usually get. My cycle is usually 28 days, give or take a day or two so I still have 8 days before I'm supposed to start again. Has anyone experienced this and what could it be? Also just to throw it out there its impossible for me to be pregnant