Usually the first symptom is missed period
. It can also be spotting or an unusually light period
. This is followed by morning nausea, sore and tender breast, weight gain, mood swings, fatigue, frequent urination, feeling very hungry, food craving, and sensitivities to smells. Only a small percentage of women experience these symptoms about 4-5 days before the missed periods. Some women have no symptoms except the missed periods. So, you could be falling in this category.