Sharp pain for a while while peeing on a full bladder

Hi I’m currently tested positive 2-3weeks for pregnancy. It’s my first pregnancy and have yet to consult a gynae, am ask to go back for a scan after 2 weeks in KKH. I just experienced sharp pain for a while while I was peeing on a full bladder. And today I walked quite abit. Now I no longer feel the sharp pain. Should I be concern? What should I look out for? Please help. Thank you!!