Labor coming soon?

Destiny • Engaged and pregnant w #3 Our little monsters; Aliyah & Jordan
Im 34w 5d right now. For the past 3 days ive had contractions pretty consistently. Theyll come for about 2-3hrs then stop for an hour an come back at one point i had them consecutively for 5hrs.  My bms have also been different and ive had no change in diet that could effect that.  With each contraction i feel vaginal pressure.  Im hoping baby stays in at least another week or two. But could this be the start?  Should i pack my bag just incase?