All pretty much the same. Even dc #3 who was induced started the same
Lower back ache, mild cramping for a few days,lots of discharge. Then out of nowhere and hour(ish) of bad contractions and I'm holding a baby. Hence dd #3 being in hospital. She was a high risk baby and since I go from cramps rating maybe a 3 to a 9 in a matter of minutes I don't get the choice of making it to the hospital.
Now I'm very preterm with baby #4 showing all the same signs...sigh