Haven't dropped yet........

Emma • Baby #1 - Boy 💙 born 14 July 2015!!
I really don't think I've dropped yet? Is this normal? You can see in the weeks comparison that it's still high up and the other pic was taken 2 days ago. I'm 37w4d now, have lots of pelvic pressure/aches and feel I have to hold my belly up a lot of the time just to take the pressure off that I feel? See midwife on Monday so hopefully she can tell me but last Monday I was told baby's head was down but not engaged. Any advice or comments appreciated x