My girl urinates about three times a day like clock work. About twice a week I will find 2 or 3 urine clumps during a single visit. One as big as a tennis ball and one as small as a large marble. Her litter box is cleaned immediately after use. I'm paranoid due to Mosi being on dry food exclusively the past two months and afraid of urinary infections that could possibly develope. I am trying to get her on wet food again, but she isn't cooperating. She doesn't strain, vocalize or make frequent attempts at the litterbox. I just have never experienced this before. She drinks and eats normally. Food brands are in my signature. Should I be concerned?