I have been breastfeeding for almost 2 years. I have read that this can significantly lower oestrogen and even mimic early menopause. Since I got my postpartum period 6 months ago, I have sinusitis the week before my period although this last month I have had it for 4 weeks and counting. Low oestrogen can raise inflammation/ cause sinus issues and I am wondering if there is a link to my breastfeeding. GP unhelpful and patronising on all of this, the nasal spray and antihistamines that I’ve been prescribed having no effect on the sinus issues. Anyone with any insight? Feel like it’s one of those things I need to resolve myself as I am not going to get any help from my doctor.