Have you had these pains before?

Katie • 27 years old, married
I'm 7dpo and have had these pinching pains all day on my left side that pinch/pull moreso if I stand up but have a full ache when sat down when DH leans on me. If i stand too quickly it rly hurts so I'm standing slowly and almost pressing the spot until I'm straight. It's not quite ovary pain but near that region (low and left). 
​What could this be? 
​My DH said gas and laughed at me, which I would normally laugh at too but I don't have gas!  Just pinching, aching and pulling feelings! Not had this before