..not always a MUST!
I would declare that NOTHING is a MUST when it comes to being pregnant.. I say this because every woman, every body, every pregnancy, every baby are so unique and different.. I had barely any tell tale signs that I was expecting, but my friends have had so many common ones! You really cannot write off anything being any which way when it comes to signs and symptoms.. the blood test and growing baby are what seals the deal ;)