What were your second pregnancy symptoms before you found out?

So I'm not sure if I'm pregnant or not, but my boobs have been sore all month (they're usually only sore a week before my period). Also today I thought it was a little strange as I had this familiar feeling in my boob, but couldn't pinpoint what it was, then my boob started leaking. Then it registered that it was the feeling of letdown (I breastfed till 18 months and he turned two in July, so this is still nothing out of the ordinary). I also woke up feeling nauseous like I had to vomit.

I'm not trying but not preventing so if I were pregnant, that's great, but it's not something I'd be disheartened about if I wasn't.

What were your own symptoms? Thank you :)