I think a lot of people actually find it difficult to believe that we are capeable of planning our pregnancies, and know when conception has occured, therfore knowing our due dates.

I live in country vic, with DS I only had one US at 20 weeks. with DD I had 2 13 weeks & 20 weeks, more to keep my gp happy, because i'm 29 (being cautious looking for skin folds)

Hardly any professionals or anyone else for that matter believes me when i tell them that A this is the EDD and B I will go 1 week over.

I use the knowledge I have learnt from charting to get pregnant as a contraceptive as well, because i do not want to take one until I have finished having kids, Although this is only the second time i have already learnt to lie to the docs in hospital and tell them I will discuss contraceptives with my GP, because the first time they seemed a little sceptical i could achieve this form of contraceptive despite the fact my husband and I that have been together and sexually active for more than a decade have never had any accidents, or used more precaution than condoms.

Sometimes I think the God complex is increasing, and their responces may be a direct responce to being matched with such strong willed, intelligent and informed women that are health consumers not patients.

Stick to your guns, you can always say I told you so.