My female chi is 3.5 lbs and almost 8 months old. I think she may be in heat due to her suddenly humping my husband’s arm🙄. Other than that, I don’t see any physical changes in her. She is trained to use a pee pee pad and has been successful until recently. Now she has suddenly taken to peeing and pooping on both the carpet and floor. She has no hesitation to do this in front of me. When I say “bad girl”, she seems to realize she is naughty but I just don’t know. Someone mentioned she could have a UTI but she doesn’t seem to be in pain and seems to be peeing more frequently. Can a heat affect her like this? Or does this sound like a behavioural issue?