Chronic diarrhea is a common symptom of both. However constipation can be a problem too. In ulcerative colitis, constipation can be a sign of inflammation in the rectum and in Crohn's disease it can be a sign of an obstruction in the small intestine.
Does the  go before or after the period. I was taught in school, when I was growing up, that the ending quotation mark always goes after the period. However, in college, I'm noticing that's not always what is happening. Same as when I sometimes read news articles. She took her to the party and she remembered saying, have fun.
Some are included within the quotation marks, if it makes sense, and other are outside of it. The standard rule in American punctuation is that periods go inside quotation marks, as do most commas, even if the punctuation is not part of the quote. American English is known for its exceptions to rules, and there is one type of incidence where it would not be the case that periods go inside quotation marks.