Pain under my left breast

Hi, I'm 29 weeks pregnant. Two days ago, I started feeling pain under my left breast and my ribs. I also developed a small cough which comes and goes. It is extremely difficult for me to lie on my back and even on my side. It hurts more whenever I cough. It feels as though my rib is swollen or something. Even taking a deep breath hurts too. Is this normal? Did you experience this kind of pain during your pregnancy? P.S. I did some research and found a few alarming reasons for what I'm experiencing. However, I also read an article saying it is just the baby growing and my body accomodating the baby's growth. But it hurts so much, I cannot get any sleep. #1stimemom #firstbaby #advicepls