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1 Labor contractions may feel like menstrual cramps. 2  Really bad menstrual cramps. 3  At least, that's the most common description that's bandied about.  4 It starts out like menstrual cramps -- and the crampy sensation progressively gets worse and worse, Dr. du Treil says.5  You may feel the uterus tightening.till, there are a few clues that what you're feeling is actually labor contractions. 1  Labor contractions may feel like menstrual cramps. 2  Really bad menstrual cramps. 3  At least, that's the most common description that's bandied about.
Here are some things that may happen in the weeks or days before labor starts: 1  Your baby drops. If this is your first pregnancy, you may feel what's known as lightening a few weeks before labor starts as your baby descends lower into your pelvis. 2  You note an uptick in Braxton Hicks contractions.