my cycle had returned relatively recently (it was my 5th menstruation before I got pregnant), and the average length was 27 days (however the first one was 34 days). I wasn't ovulating around days 14-16 (according to the ovulation kit), it was slightly later..... and according to the person doing the scanning, 16 days later (ie day 30) LOL

however i am no expert on cycles either... but know enough to think that ovulating on day 30 of a 28 day cycle doesn't make sense.

I'm no expert but ovulation is usually mid cycle. The average cycle is 28 days which means you'd ovulate at day 14 so 16 days sounds about right to me.