Sharp pain

Corrina • Mummy to a 3 year old little girl, expecting our second little girl in November '15. 🎀
I'm 27+4 weeks pregnant and I've got a sharp pain like stitch in the side of my bump but quite low down. It started when I was hanging washing out about 10 minutes ago & now I've sat down it still hurts :-( she's still moving about a lot so I'm not too worried but it hurts, almost feels like I've pulled a muscle 😫 can anyone help?