Pregnency symptoms come and go. Worry?

Hello Doctors, My wife is pregnant. Her LMP was 2nd March. She has PCOD and had diagnosed with Ectopic pregnancy in Sep, 19. She missed period this month and we did home test on 15th April and it was positive. We consulted a doctor and he suggested to do USG to check whether this time it is ectopic or not. Luckily, after report, we got to know that it is not ectopic pregnancy, However, it was mentioned that gestation was 1.2cm and pregnancy was 5 week 3 days. It was also written that Fetal Pole not identified. Now my main question, she was having pregnency symptoms like nausea, muscle pain etc till 16th April but after that till day, she is not feeling any such symptoms. Is this something to worry? Our doctor has asked us to do USG on 1st May to check fetal pole and size of gestation, but we are bit worried because of no symptoms right now. Kindly guide. Thank you in advance.