At 5 weeks of pregnancy, experiencing mild dizziness is a normal pregnancy symptom and generally nothing to worry about. Around 40 days after the last menstrual period, some women may also experience nausea, loss of appetite, vomiting, fatigue, breast tenderness, mild back pain, and a feeling of heaviness in the lower abdomen. These are all common pregnancy symptoms related to hormonal changes and pelvic congestion.During early pregnancy, it's important to get adequate rest and avoid heavy physical labor. If you have a history of missed periods and are experiencing these early pregnancy symptoms, after confirming pregnancy through an hCG test, you can have an ultrasound around 6 weeks to check whether it's an intrauterine or ectopic pregnancy and to assess the development of the gestational sac.If you plan to continue the pregnancy, remember to take 0.4 milligrams of folic acid daily. Within the first three months of pregnancy, you should undergo relevant checkups and establish a prenatal care record.