We have done it about 4 times so far too (seems like four is the magic number). I am 23 weeks and not "too" big yet but it seems to be getting a bit more difficult each time. As well as this, I have been keeping DH happy in other ways too.

My libido is higher than usual and has been for the past three weeks which DH and I are both enjoying.

What about us gals on top? That way there isnt too much squishing and squashing going on and we can control certain things .....