Suggestions to relieve back pain?

Caroline

Specifically, the rhomboid major under the scapula (reach the arm back and feel the protruding triangle)? I am at 28 weeks pregnant with 32/34 DDD boobs and I am experiencing discomfort. So, I was wondering if anyone has tips to make this less painful besides popping a painkiller [I love my husband, but I try to keep medications to a minimum.]