Montgomery tubercles hurt

Hi,

Last night I felt a small pea sized lump on my nipple. When I looked at where i was feeling it, the Montgomery Tubercle had white liquid came out.

I just started having pink discharge/spotting today. Assuming it’s start of period but possible i could be pregnant and this is implantation bleeding. Assuming I’m one of the 20% who gets it lol.

Not sure if this is something that happens to people or if something is wrong.

Anyone experience this?