I'm 34 weeks pregnant with mono/di twins, i have a burning feeling in my stomach constantly and i can feel ripping or tearing is this normal?

No.: Ripping or tearing sensation is not normal in any pregnancy and could be a harbinger of catastrophic uterine rupture. This is a rare but potentially lethal complication seen more commonly with multifetal pregnancies as compared to singletons, especially if the mother has had prior uterine surgery (c-section, myomectomy or other). Talk to your mfm/ob doctor asap to get to the bottom of this!