Braxton Hicks: My sense is that we are a bit too early for braxton hicks - I would describe it as painless contraction / tightening of the tummy. Usually get it after 6 months.
The painful pulls that we feel is likely due to pulling of muscles and ligaments, and expanding uterus. Pelvic pain is (at this stage) caused by one of the reasons above. At the end-stage, it would be due to the descend of the baby's head and the softening of the joints (opening of pelvic) to get ready for baby's arrival.
Whenever possible, we should do some light exercise like walking or strolling - keeps us active and good for pains, aches, and even insomia and bloatedness!! However, this does not equate to standing still - as this will tire our feet (and water retention later on). So, ladies, we've got to move it move it!! (while we still can)....