I recently ran in my first race ever a few weeks ago. I had been training for several months and a few weeks before the race...when I couldn't get over the "flu" I had, I found out I was pregnant (with my second). I slowed my pace and ran the race anyway. I was 10 weeks. It was a relay race with a team of 12 that went 31 hours. It was rough but I am so glad I did it and like you, am excited to be able to tell my little baby. Good luck!