Intellectually, I know this could be a number of factors; in fact I get random twinges often on that side since the surgery. I usually consider it proof that the tube can still move. The pain starts around ovulation, and continues until my period starts.
However today I'm paranoid, and something in my brain is whispering ectopic.
I thought of taking an hpt this morning, but this would be a complete waste of a test as I am only 4 dpo, so a normal pregnancy wouldn't be showing yet, and an ectopic pregnancy definitely wouldn't be. I'm not sure if a normal pregnancy would have implanted yet but an ectopic one might have whispers that little voice.
When I had the HSG earlier this month, I was really surprised at how small the uterus and tubes are compared to the surrounding space. I guess because the only time I'm really aware of them is when they hurt in some way, and then the pain fills the whole abdomen. Knowing this, I know that the pain could be coming from my fallopian tube, but could also be coming from the ovary, or the uterus as well, as they are all so close together.
I don't know if this makes me feel reassured or worse.