Honey, it really sounds like you have a yeast infection. Many people describe the discharge as "cottage cheese like". I know it sounds gross but very accurate. The redness and possibly itching (you didn't say but I'm guessing) are also tell tale signs. Your doctor can give you a prescripton and will look at a sample under the microscope to be sure. Because you are so irritated, stay away from any over the counter 1 day treatments because they will burn! If your doctor gives you a pill (diflucan) it will take longer for the outside symptoms to go away. There is a cream called Terrazole which may be more soothing and you can ask your doctor about. **** HOWEVER, if you have a fish like odor with the discharge, especially after sex, you probably have BV which is like a bacterial yeast infection. I would stay away from the pill treatments and use a Clindamycin based product to treat it. Important to finsh the meds and use them propperly. You doctor will tell you which you have for sure. Good luck, don't worry.
You can either have one or two things-an infection (whether yeast or some other form of bacteria) or a STD.
It sounds like it could just be yeast infection. The white clumps, do they resemble cottage cheese? That's also a common side effect that can happen when you do have the infection.