SEVERE round ligament pain

Anyone else experience anything similar? I am having severe, debilitating abdominal pain mostly on the right lower side. It started relatively abruptly yesterday and was literally immobilizing. When I tried to lay down which made the pain even worse and brought me to tears. I also was very nauseous and threw up a couple times. If I push on my stomach or take a deep breath it makes the pain worse which makes me feel like it’s the ligaments. It has eased up a bit since yesterday but is still very uncomfortable. I don’t have any fever or anything like that. Any advice on how to help the pain? Are heat pads safe?