The causes of baby's bump to drop is the baby descending to engage in your birth canal.
A baby's bump dropping is also known as lightening and is when your baby settles lower into your pelvis, in which they are preparing for birth.
The baby's bump dropping often occurs in the late third trimester of pregnancy and it is caused by the baby descending to engage in your birth canal, which often results in easier breathing, but also increased pelvic pressure.
The main cause for the baby's bump to drop is preparation for labor as the baby's body and head are aligning with and entering your pelvis, which is a sign that your body is preparing for labor.
The lower segment of your uterus softens and thins and allows the baby to descend lower.
And for first time mothers, this often occurs 2 to 4 weeks before labor, although for subsequent pregnancies it might not happen until the labor actually begins.
The baby's natural descent is called lightening because it relieves the pressure on the ribs and the diaphragm.
Common signs of the baby's bump dropping are easier breathing, which is a result of reduced pressure on the diaphragm.
Increased pelvic pressure and increased pressure on your bladder, which leads to frequent urination.
A visible lower bump, in which your belly appears noticeably lower.
Reduced heartburn as you have more space in your stomach.
Increased discharge as your baby's head presses on your cervix.
And back pain, due to extra weight on your lower back.
If you feel your baby has dropped, it's nothing to worry about and is a normal part of pregnancy during the third trimester of pregnancy.