I am 66 and my psa was 4.06 2018, 2.28 in 2107, 1.64 in 2016, 1.59 in 2015, and 1.46 in 2014, 4.30 in 2013. My urologist did a prostate exam and felt a rough spot and want to do a biopsy. Should I get another psa test and opinion since I read that biopsy are dangerous?