Thanks
Gynaecologist, Gynaecologist - Infertility (IVF) Specialist, Obstetrician
Hi there,
If your cycle is regular and predictable, and you get premenstrual symptoms prior to the bleeding, then this probably represents the onset of your period. However, if you're having significant pain in the days prior to the bleeding, this may be a sign of cervical stenosis and the menstrual shedding (period) may have begun earlier than the revealed bleeding.
It's a little had to be sure without a full history and examination but, if there's any doubt, I'd generally suggest an early cycle (eg Day 3) pelvic ultrasound, which gives a complete visual representation of your physiology - some gynaecologists can perform this themselves in the rooms at the time of your consultation.
Either way, LH, FSH, oestradiol and progesterone levels fluctuate throughout your cycle, so their interpretation requires some certainty about when in the cycle they were measured.
Regards,
David.
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