7 weeks pregnant

Hi, im currently 7 weeks pregnant however it appears that my symptoms come and go. For the past two weeks, had tender/sore breast, mild cramp on few occasions, feeling fatigue and hungry every few hours. Now, no longer feel tender/sore breast and fatigue except for the extreme Constant Hunger and mild cramp which remains. Felt a sudden sharp abdominal cramp (lasting less than a min) in the middle of the night while sleeping. -> is this normal? Does symptoms come and go? Is it normal?