I'd definitely get checked out to see whether or not you have PCOS because those do sound like possible sympoms. I was diagnosed with PCOS last year and have quite a few of those symptoms - I don't get the constant positive OPKs or the acne but I have really bad weight gain, hair growth and I stopped having periods for quite a while.
It's quite easy to diagnose as PCOS shows up on an ultrasound of the ovaries, although some doctors (like mine) do bloods first to check your hormone levels incase it's another problem such as your thyroids.
Also, just another point.... although it's late and i'm a bit tired.... But, when you say that your tests are positive do you just mean that there's always a line?
Most brands of OPK are not actually positive unless your test line (usually the left one) is as dark as, or darker than, the control line (usually the right one) and it's not uncommon to get faint, or even relatively dark lines at other times of the cycle and these should still be regarded as negatives.