Hi Welcome to healhcaremagic After going through your query I concluded that you are having shoulder pain off and on and your bowl movements are as not big as was earlier. I think these are not interlinked. For shoulder pain you can take analgesic such as ibuprofen for pain relief whenever required. For bowl movement change you require clinical examination by general surgeon. You can discuss your doctor about it. Hope your query get answered. If you have any clarification then please don t hesitate to write to us. I will be happy to answer your queries. You can also write to me directly on below link: https://www.bit.ly/askdrsudhirortho Wishing you good health. Take care.