The follicles in the left ovary being peripherally positioned just means that they tend to be found around the edges of the ovary. I believe this is saying that it appears to be somewhat polycystic in appearance. This in itself does not indicate that you have PCOS, though.

I think the internal echoes just mean that the follicle is filled with fluid - it's just describing the way the ultrasound waves respond inside the follicle.

As for what it all means in relation to painful sex, you'd need to see a doctor for that. I would like to think that if the GP wasn't too concerned about what the report says, then it's likely to be nothing too troublesome. Make sure you take the report with you when you see the IVF doctor.

There's always the problem of reading ultrasound reports - they use scary-looking med-speak which often doesn't actually mean anything significant, it's just a fancy way of describing what's there.

BW