Are cramps normal during 1-2 weeks pregnancy?

Actually that was when i know that i was pregnant, i went to GP to check because im having cramps for days because its kinda wierd i have a PCOS and havent got my period for a long time (7months already since the last time), I even woke up in the middle of the night because of the cramps. Then when the GP checked on me, he told me i was pregnant and immediately referred me kkh to see obgyn. I was told i was in early stage of pregnancy (that time it was 3weeks). Doctor told me it was normal because my uterus is expanding and my body is still adjusting to the changes. I should just call if i notice any bleeding or what. And just take panadol for the pain.