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The ligaments that support the uterus will stretch and with this stretching may cause mild cramps. 3. Miscarriage-Cramping during early pregnancy, especially accompanied by spotting or bleeding, is a warning sign of a possible miscarriage.
Reasons you may feel cramping during pregnancy. Things that can cause your uterus to contract or cramp at any time during pregnancy include a full bladder, an orgasm, exercise, or a urinary tract infection. Trimester by trimester, here's what you can expect: Cramping During Early Pregnancy.