miscarriage and question!

If anyone was wondering I went to my OB today and I did lose the baby. I would have been about 7 weeks but the baby stopped forming. My doctor said I can try again after my next period but to remember that 1 in 6 pregnancies end with a miscarriage. He said it usually means there was a bad egg or a bad sperm. Those numbers are truly terrifying. I have two healthy girls already and I can't imagine having to do this again. 
Anyone here have an rainbow babies after only one period? This baby was so loved. But we do plan on ttc as soon as possible. I'm just terrified to be excited about something I'm scared to lose again. :(