From what I have read, it sounds like it could be the baby just pulling on the ambilical cord. I get minor pains in that area, too, but yours sound worst. I will be 33 weeks tomorrow and I am still carrying very high and I don't have severe back ache. It almost sounds like your baby is starting to plan his/her escape. Good luck with your Dr's appt tomorrow. I am sure everything will turn out fine.
Shaila
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