Braxton hicks?

Hi Moms. Currently 34weeks+ 2nd pregnancy. Started to feel contraction on off - tightening.. menstrual cramp to lower back. To pressure at vagina. Feeling like pooping too. U name it.. 2nd time of the week. Whole body sweaty non-stop. Feel nausea & headache. Lost appetite to eat. 20mins interval. Should I be worried?