I just need to list what I've been doing so that I remember. 
Saturday - 6 miles - No side ache
Monday - 5 miles - Side ache first 2 miles
Tueday - 2.6 miles (to Kiwanas and back)  Side ache still, not going up hill but extreme going down hill.
 
I'm trying to figure out my side aches.  It's driving me nuts!  I've never had a side ache before and the past 3 weeks are killing me.  It's got to be the pregnancy and hopeful it will go away.  As far as the miscarriage, everything happened Saturday afternoon through Sunday.  Now I'm just waiting for the bleeding to stop and my energy to be back at full strength.  Sorry if the was too much information.  Really no other way to put it.