Fatigue

I just feel like I could sleep and sleep and sleep.
I did 5 miles Tuesday, 3 miles yesterday and I'm supposed to do 10 today. A little mental block w/that. I'm sure I'll be fine.
My body just feels tired. I worked 6 hours last night and I just feel like I can't get enough sleep these past few days. My boobs are SO sore. A little nausea last night and today which is very managable if I keep eating little snacks.
I have my first doctor's appointment next Tuesday. I'm anxious to get a blood test and see where my HCG levels are. For some reason I feel the need to validate this pregnancy and know that it's for real. I've never been pregnant. All of those infertility treatments, all those injections, and cycles. This is new and somehow, I guess I don't really believe it. Or maybe I'm afraid to believe it. I don't think I'm mourning my marathon anymore. I know I'll do it someday. It's still in me, it won't be taken away. I'll most likely do the half so I can still experience that day.