Does having very strong menstrual symptoms mean there's no hope of getting pregnant?
A strong sensation of menstruation, in fact, refers to the feeling of having a period. Generally, if the sensation is very strong and followed by actual menstruation, pregnancy is unlikely; however, if the symptoms are due to early pregnancy discomfort, pregnancy may still be possible. If in doubt, it's advisable to consult a healthcare provider early. Detailed explanations are as follows:

If a strong menstrual sensation is followed shortly by normal menstrual bleeding (with flow volume and duration consistent with usual periods), pregnancy is typically ruled out. This sensation is often caused by hormonal changes before menstruation, known as premenstrual syndrome (PMS). The onset of menstruation indicates that conception did not occur and the body has entered its regular menstrual cycle.
However, if there is a strong sensation of an upcoming period but no actual menstruation occurs, or only light spotting appears (different from a regular period), pregnancy may still be possible. Hormonal fluctuations in early pregnancy can cause symptoms similar to those of menstruation, such as abdominal heaviness and breast tenderness. Some individuals may also experience implantation bleeding, which is not a true period. Further testing is needed to confirm whether pregnancy has occurred.
When experiencing a strong sensation of menstruation, observe whether a period actually begins. If menstruation is delayed, use a pregnancy test strip or visit a doctor for an hCG test. In the meantime, avoid strenuous activities, maintain a regular sleep schedule, and minimize anxiety, which could negatively affect your physical condition.