Hi Anna,
My first cycle of 50mg I had two BTs, one on CD21 and one on CD26 and both were very low levels of progesterone so I hadn't O'd.
My second cycle was 100mg and I asked my FS to have scans to see if anything was growing...so I had a scan on CD14 and nothing happening and then another scan on CD21 and nothing happening.
My third cycle will be 150mg and if nothing happens then I will move into FSH injections.
SAM