I'm a day late but i've been extremely stressed. i have mild cramps, back pain, sore nipples but no blood. can stress cause a late period?

Missed period: Hi, yes stress can cause a late period or even missed period but you need to do a pregnancy test,pregnancy is the most common cause of missed period.

If severe enough.: Reasons for missed /late periods: low body weight, obesity, marked weight gain or loss, over-exercise such as in endurance athletes, breast-feeding, stress, illness, eating disorders (bulimia or anorexia), travel, hormone irregularities, drug use, medications (i.e., birth control) or med problem (polycystic ovary syndrome or Asherman’s syndrome. #1 reason for missed period is pregnancy.