Is anyone else feeling this?

Nakita • 30 years old, Married Baby 1- June 2015, Baby 2- October 2016, Baby 3- March 2018! Baby 4 October 2019
Im 12 weeks today, have had no symptoms!? Except I've had some lower back pain that is really starting to be uncomfortable !!! I didn't think back pain would start this early on!?