You can only get pregnant after you ovulated so ovulation on day 24 have nothing to do with pregnancy. The body is an unpredictable thing and sometimes we have one or two cycles that are short or long for no apparent reason. Your period came 13 days later which is pretty normal.

37 Days is a long period, especially if your normal periods are much shorter. If it continues that way you should at least consult your health care provider to make sure everything is ok. For one or two such periods, you should not worry.