Hi Zeezee - I'm also on 10mg of Citalopram and I'm 5+3. I had a conversation with my Dr last year about my medication as my DH and I had discussed starting for a family this year. She said that obviously, because no-one in their right mind would test pregnant women and babies, there aren't any studies to show that anti depressants are harmful or vice versa.
We weighed up the pros and cons and decided that the benefits of being on them (i.e. no panic attacks, no OCD, no depression, reduced risk of post-natal depression) outweighed the possible (but unconfirmed) cons of it doing any harm to the baby. I think the only thing it would really affect is that I wouldn't be able to breastfeed as it's passed on in the milk.
I have, however, had to see other on-call Drs since then who have said differently, but currently I feel great (apart from occasional hormonal mood swings which are to be expected in most pregnancies), and the fact that I'm on such a small dose means I'm even less worried about it.
You need to do what's most comfortable for you though. Unfortunately, compared to soft cheese, raw meat, alcohol and smoking, there is no definite guidance.
Did the second Dr suggest that maybe you should go back on them?