I'm nearly 5 weeks pregnant with my second child. DS is 4 and we've been trying for ages. I'm so anxious that I'm going to lose this one, even though I've no specific reason to believe that I will. I am considering having a private scan at 6 weeks in the hope of reassuring myself. I don't think I could bear to wait til 12 weeks. Has anybody else done this? Do you think I'm crazy? Would I be better to wait for 8 weeks? Any thoughts gratefully received.