External is the worst with a full bladder... Ooooooh the relief when you get to pee before having dildo cam...
Hahaha! I was nearly crying when i went, so they let me "empty" half of my bladder while I waited. But I had a 45 minute drive from work to the clinic.

Mitch83, I have very irregular cycles both before and after i went on the pill. I am what the ultrasound technition describes as "borderline PCO" I don't have any symptoms besides very irregular cycles and positive OPK's all the time. But I have tried clomid (fertility drug) and since stopping and going back to natural cycles i no longer have positive OPK's all the time
It's still early days after coming of BC, so your cycles will probably be a bit crazy. But i would definitely get BT's etc just to rule out anything that could compromise you concieving.
Good luck!