anong week ba bumababa ang baby?

I am 33 weeks and 5 days as of today .Last week nag pre term labor ako dahil sunod sunod ang paninigas then brown discharge kaya bnigyan ako ni OB ng pampakapit na need ko itake for 1 week..kaso napansin ko bumababa na si baby. May space na from my boobs na dati hnd. Irregular kasi ako pero LMP due ko is Sept 5. While first UTZ is Oct 8. D ko tuloy talaga alam kailan lalabas si baby. Ayoko din naman ma overdue at baka mapano sya :(