Arm/Leg cramps Early pregnancy... Dehydration?

While its still early (AF due in 2days) but i got a BFP yesterday (faint but darker today)! I am excited and nervous because of a prev miscarriage a couple yrs back.

But i have been experiencing left leg and arm cramping... is this normal?!? Maybe i am just dehydrated or is this a regular pregnancy symptom?

Also, when would be a good time to make a doctors appt? HELP!!!