Question: what are the side effects of low estrogen levels?
Answer: Flashes, flushes, and night sweats are the most common symptoms of low estrogen. At times, blood rushes to your skin's surface. ... 
Mood swings are another effect of low estrogen. You may feel sad, anxious, or frustrated. ... 
Thinning tissues may cause discomfort. Skin may appear more wrinkled.