Nonstop diarrhea?? TMI

I know most people get diarrhea and it last maybe a day or two and i even get it often due to my stomach being sensitive but the past 3 almost 4 days now I’ve had diarrhea and horrible gas and it’s been nonstop. I’ve also been a little nauseous but not thrown up so at first i thought it was a stomach bug. But tomorrow will be 4 days straight and i am supposed to be back at work tomorrow and I’m not sure how I’m going to survive. I’ve even been taking anti diarrhea meds and it will help a few hours if that and the diarrhea comes back as soon as i eat or drink anything, even water. I’m extremely hungry at this point and feel miserable.

Should i go to like an urgent care?? What else could this be? Still a stomach virus? Food poisoning?

I’ve never had this much gas in my life it’s literally so painful and the diarrhea is uncontrollable. Ive spent hours in the bathroom today. Any suggestions