OP - I would recommend using a good quality woven wrap and back carrying. When knotting the wrap, use a technique called "tibetan tie" - it knots over your chest so is completely clear of your bump. It can also be done with a Mei Tai carrier (like Babyhawk, Maya Tai etc) which is a bit more straightforward to put on your back than wrapping
Ettienne - I break in by chain knotting/sitting on my wrap, letting it go travelling (ie. let others use it for me), carry my toddler in it - just play rough with it Washing and steam ironing is meant to help a lot too
Can't go wrong with a good old Didymos or Girasol in my opinion! Majority of the major sling brands come out of Europe. If you're slinging in Australia - look for Linen blends! I'm quite lucky living in the UK that slings are generally cheaper for me, as being an EU country, much lower import costs.