stabbing pains

De

so, I got up this morning and was getting ready as usual. And then I walked unto the living room and about fell to the ground and started crying. it feels like someone is taking a serrated knife and stabbing me in the vagina.... i told my Dr about the pains but they were more mild then. And he said round ligament pains. but now I'm 2 more weeks since then and they are worse. what can this be?? p.s. this is my first pregnancy.