help!? it hurts...

Mr
Last night I was woken from my sleep with an intense sharp pain at the top of my belly, just under my ribs on the right. it was like a stabbing pain it was hurting when I moved, or breathed in, I massaged the area and it did go away. Has anyone had this? I'm thinking it might be round ligament pain but I dont ever remember it with my first. I'm 16w 3d. It was very sharp and intense. Any help would be appreciated. Have had  no bleeding or cramping or anything like that. TIA