It can be concerning to experience bleeding and not see the baby on an ultrasound, especially with mild cramps and light red blood. However, it is important to remember that every pregnancy is different, and there can be various reasons for these symptoms. In some cases, it could be too early to detect the baby on an ultrasound or there may be other factors affecting visibility. It's recommended to follow up with your doctor for further evaluation and guidance. They may suggest repeating the ultrasound or conducting additional tests to assess the situation accurately. While waiting for your appointment, try to take care of yourself by resting, avoiding strenuous activities, and staying hydrated. Keep in mind that stress and worry can also impact your well-being, so try to stay positive while seeking medical advice for a clearer understanding of your specific situation.