leaky nipples early pregnancy symptom?

Gen
I'm in my tww. 5/6 dpo. Once again I have convinced myself I'm definitely pregnant. Today I squeezed my nipple and MILK CAME OUT!? This has never happened before. Both boobs did it when squeezed. Also thirsty and couple of dizzy spells. Last month I had no out of the ordinary 'symptoms'. 
What do you think, anyone experienced this before a bfp or in their normal tww? 
I'm ttc #2, our baby is 10 months (haven't be since 10 weeks old).