This is a progesterone shot that is as thick as vasoline that is given from week 16 to week 36. Every week. This will be my 3rd time using them only reaching 33wks the first 2 times. I have had 4 preterm births that wasnt too early at 34 to 32 wks. I am hoping to get that far this time or much further. Is anyone else doing or going to be doing these shots?