So i thought i was prego because i had some symptoms but i ended up having my period but it only lasted 2 days when it usually lasts 4 is this normal ?

Period bleeding ?: If you "thought you were pregnant" and this was on the basis of a positive test, a short bleeding episode may not represent a period, but could still indicate pregnancy. If the pregnancy occurs outside the womb (ectopic) , it needs immediate attention. Obtain a serum HCG test to be certain, and see your gyn/OB physician if positive for an exam and testing.