Ay, sis, 39 weeks na pala ikaw, honestly, I'd suggest checking with your OB muna before you book kasi sa ganitong stage, baka triggering ng labor ang mahabang lying down, and some doctors ay strict talaga about it. One of my mum friends tried to get her nails done at 38 weeks and her doctor told her na better na hindi na, so better safe than sorry! If your doctor gives the okay, definitely tell the lash technician na kailangan mo mag-shift positions or semi-reclined ka instead of flat lying down, marami naman sa salons na flexible with that, pero get the green light from your OB first, ha?