A small amount of clear, watery discharge from both nipples when squeezed can happen even outside pregnancy and breastfeeding. Common non-serious causes include hormonal changes, raised
prolactin, an underactive
thyroid, or a medicine side effect. Repeated squeezing itself can keep the discharge going.
Next Steps
Please stop squeezing or checking the nipples for a couple of weeks, then reassess. Book a gynaecologist consultation to discuss the tingling and any other symptoms; a hormone check may be advised.
Health Tips
A single-duct, spontaneous, or blood-stained discharge is the pattern that needs prompt review. Yours does not sound like that, but please seek an in-person check if the character changes.