Sayang, please go to your doctor or clinic ASAP to check this out, better safe than sorry masa pregnant! Rasa menyucuk dan sakit yang kerap berulang mcm tu kena check with proper scan, especially at 6 weeks. I know la first time pregnant, banyak yang tak sure, tapi rasa sakit yang pattern mcm tu jangan tunda, go this week if you can. One of my mum friends pun had cramping early on and doctor kena monitor closely. Don't worry yourself alone, let the doctor reassure you okay?