What went wrong?

Hi so today I finally was able to get an appointment to see my OB and I have been worried about a possibly STI.

Lately I've been having watery like discharge, a more fishy smell and just general discomfort. When I was on the table she said that there was definitely an infection due to me being completely red down there and when she stuck the QTip in it was around an 8/10 on the pain scale.

This hurt so bad and when I came home to use the bathroom it almost felt as though my Urethra was swollen shut? I haven't experienced this before but it hurts so bad and I almost think she may have stuck the QTip up there instead?? Is there any tips you guys have to alleviate the pain? I'm planning on buying some cranberry juice tomorrow just in case a UTI starts forming.

Oh also she did she'll get the labs back in Friday or Monday and let me know what I have and get some antibiotics to me then.

Please help!!