I have done numerous urine dipstick tests and all come back that i have 15mg of protein in my urine. my blood pressure is normal. is it normal to have?

Dipsticks no good: Urine dipsticks for protein, even when repeated, are unreliable. You need a proper urinalysis, by far best is a 24 hr. collection. This will also check for other things in your urine. Simple blood tests are also done. If you do have significant protein in your urine, you need a medical workup. The possibilities are too broad to speculate at this point.