I know this sounds crazy that I'm worried about this, but over the last 2 weeks my 1 year old cat Freja has started purring almost non-stop. Everytime I look over at her she has her little motor going; the only time she seems to stop is playtime and showing off toys time (She parades her toys around the apartment with a very loud meow). I've heard that cats will purr if they're in pain, and they are so stoic they won't always tell you if they're hurting. She shows other affection signs: nose rubbing, head bonks, general snuggling and grooming. She eats/drinks/litters per her usual routine. I'm going to feel silly taking her to the vet for "purring"; is there another way to tell if she's in pain?