24 weeks and looks like dropped

Pooja • Baby boy born on march 7th 2016.He is gonna be a big brother soon.. expecting second baby on april 2018

I am 24 weeks and looks like my tummy dropped and I feel the baby movements really low. Feeling lot of pelvic pain as well. should I worry or is it normal? what do you think.. please let me know. last pregnancy with my son, I carried him really high till 32 weeks and dropped only after that. Here is my belly pic taken last week and today. Please let me know what you all think. Thank you