Decisions Decisions

So I am 27 and get married in 2 weeks and we want to start trying after the wedding but I have just managed to bag my dream job which I have been working my way up to for 2.5 years I start on 3rd September 4 days after I get back from honeymoon .. I don't want to maybe get pregnant right away and have to tell them I then have to go on mat leave (in Scotland, Uk you get 52 weeks paid leave) BUT I also don't want to put it off incase it takes a while to concieve then 9 month of pregnancy.. I don't know what to do I don't want my bosses to regret hiring me (I work in the NHS in a hospital so I can't get fired or anything) what do you guys think ??? xxx