I understand your concern. 34 weeks is too early for a pregnant woman to get labor pains.
Let me give you few suggestions here. You should call your midwife if you develop the following:
1. If your pain or the Braxton hicks contractions
increase in intensity i.e. if they become more painful and if they occur at shorter intervals, it is an indirect sign of you going into labor.
2. In any case, if you feel a watery fluid leaking out of your vagina you should call your midwife.
3. Any case of minimal bleeding per vagina too, you should not neglect and please call the midwife.
4. In any situation, if you happen to miss the baby's kicks or unable to feel it for a longer duration of more than 8 hours, please let your midwife know about it.
I hope this information helps you.
I wish you best of luck. Take care.