I am 22 weeks pregnant and I am sure that my baby isn't in my ribs yet, but I am having a terrible dull ache in my left lower ribs. The same feeling of discomfort when you sit in one position for too long it starts hurting. Well nothing is making it better. I don't think I am constipated as I go every day or every other day. I don't think its gas or indigestion either. It literally is annoying me. Does this happen regularly to other women? Is it from my belly stretching maybe? Any help would be appreciated.