It is not uncommon for pregnant women to experience back pain without abdominal pain or cramps. Back pain during pregnancy can be caused by various factors such as hormonal changes, weight gain, and changes in posture. However, if you are concerned about the growth of your baby, it is always best to consult with your healthcare provider. They can evaluate your specific situation and provide reassurance or recommend further tests if necessary. Remember that every pregnancy is different, and what may be normal for one person may not be for another. Trust your instincts and seek professional advice when needed.