Hard to tell from the pic but it looks likely to me, is it other places too? It usually comes up first on the torso, nappy area, places like armpits and behind the ears. Comes up pretty quick too so if it's suddenly appeared? They're usually grouchy for a week or two before, unexplained temperatures and stuff. You have to be careful with it with pregnancy so id go see ur doc, tho im sure u were anyway. Hth