Strange fluttering

A
Hi ladies,
This morning when I woke up I had a strange fluttering on my lower left, near my groin. I've never had it before. It was quite distinctive and I've not had it since. 
I got my positive peak LH test on Sunday (4 days ago). We  DTD Saturday, and twice Sunday. 
Anyone know what this fluttering could have been? Did I just have wind? 😜