Hormones: The most likely answer is hormones, as they dictate when and how much the ovaries produce the hormones, and then the hormones have their effect on the uterus. Other reasons would be pituitary, thyroid, weight (thin/heavy). If it's bothering you, or it's persisted, then see a doctor to discuss. One way to fix this problem is birth control pills as they help regulate your cycle.
Answered 1/6/2018
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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