It's gross and embarrassing

Samantha
So this has never been a problem for me, and that's why I'm freaking out now. If you don't have anything nice to say, please don't reply. I've always been really cautious about making sure everything is clean and fresh down there, but these last 3 days, even within a few hours of showering, it's not so fresh at all. My discharge has become liquidy with a sour smell. The only thing I can think of is that I kept having sex even after the area was rubbed raw. Could this be a result of irritation? Is it a hormone imbalance? Something wrong with my pH levels? Someone please help. Tell me what you think it might be and suggest what I can do to fix it. Thanks a bunch!