If it's a woman, untreated chlamydia can spread to the uterus and fallopian tubes, causing pelvic inflammatory disease. Some women could possibly experience abdominal and pelvic pain. Otherwise, it can be treated with antibiotics.
I agree, because you should be able to take care of yourself, that means that you should get shots (Flu, rabbies) , you should also eat healthy.
They probably get hurt easily because they are sensitive. another reason why could be that what you said hurt them or triggered something.
A normal human being has five basic sensory systems - sense of sight, smell, taste, hearing and feeling. Sight is made for looking using the eyes. Smell of determining odors using the nose. Taste is for tasting foods using tongue. Hearing is knowing decibels using the ears. And feeling is using the skin.