Devastated!

So many times in the last two years I would have issues and would be paranoid that maybe I actually have fractured something. But after x-rays and mri's that was never the case and my running journey continued. I have been feeling pretty good after walking/running some days and doing a lot of cross training and back to classes at the gym on the weekend. I have not been doing much in way of mileage and skipped my 1st half of the year because there was 4-6 inches of snow/ice on the C&O Trail and didn't want to risk falling. I was walking on the treadmill last week and felt pain through my big toe and the tendon. It was a sharp, stabbing pain and I feel like I may have felt that before. I changed shoes and finished my workout. I noticed I walked on the outside of my foot the rest of the day. I decided no treadmill and to just bike and do bodypump. I was feeling a little bit better after the weekend but when I got home on 2/8 I massaged the arch and ball of the foot to try and help. All this time I was like they are just going to tell me it is sesamoiditis and that it was inflamed. I always rush to the worse case scenario but this time I was like just relax take some time. I woke the next morning and could barely move my big toe up at all. All week I had full movement of the toe up and down but I was definately in pain. I actually didn't go to work which has never happened before. My regular podriatrist wasn't available and went to one that could see me. It was like a whirlwind. She came in and said you broke your sesamoid bone-hmmm what! I couldn't even think. She was like you seem upset-than the tears come. I have races this spring-I plan my whole like around these races and can't even imagine if this doesn't heal. She brought in the aircast-6 weeks minimum since these don't heal easily. One of the 3 worse bones to break. I am still in shock and when I think about am devastated. I can't imagine not running. I never thought I wouldn't be able to at least walk these races. I am going to see an ortho to make sure this is the correct diagnosis. Don't know what I will do if it is something different. She said I can do bodypump which seems strange since you are standing the whole time and doesn't seem like I can bike but hopefully he will say I can and swim. I am so bored not going to the gym on the weekend...Of course I find out Tara Costa is now doing the Shamrock-my favorite race of the year. Maybe my dad will be fine walking it by himself and I will go to cheer him on!