If you constantly get + (positive) or near positive results on OPK everyday throughout your cycle, the best thing you should do is to discuss this with your GP.
Because the most common cause of the constant + OPK is PCOS.
PCOS stands for Polycystic Ovary (Ovarian) Syndrome. It is one of the most common female hormonal disorder. And it is genetic. The symptoms include missed/irregular periods, decreased breast size, increased body hair, thinning in hair on your head, bad acne etc.
When you have PCOS, your body produce excessive male hormones, which causes the eggs inside your ovaries fail to mature. They cannot be released (ovulate) from ovaries. Instead they form small cysts inside ovaries. PCOS causes difficulty to conceive.
The overproduction of male hormones also triggers the overproduction of LH. Hence the constant + OPK results.