? mum's who have a baby already

Hi mums, I have a question for anyone who can help. I am 33 weeks with baby number 4 and have a history of preterm Labor.

Today I have been having a bad day at home and have cried for 2 hours. Since crying my uterus has been rock hard and bub is not moving much and I have been having period cramps. My question is, is this Braxton hicks that requires more rest from the stress, or could I have triggered early Labor?

Please help me...