I think I'm pregnant and I'm wondering if its normal to have indigestion, lower back aches, and cramps (spasms) running from my leg to ankle?

Center of Gravity. As your pregnancy progresses, your center of gravity shifts from the normal habitus position (~1-2 cm in front of s-2) to forward and downward. This leads to lower back aches, and sometimes cramps which may run down the legs, particularly the back of the legs along the sciatic distribution. A good exercise is to kneel on all fours with your bottom up and your head down. This relieves pressure.
Possibly. These are not unusual symptoms early in pregnancy, but you need to confirm the pregnancy and confirm that it is in the uterus.