Boob leaking at 20 weeks? Sorry TMI

Could my boob have released something at 20 weeks pregnant? I noticed a wet spot on my shirt right over my nipple and it couldn’t have been a spilled drink or something, I wasn’t holding anything. I tried squeezing my boob afterwards and nothing came out.. I know this is a gross question but is this possible this early? I’m a FTM btw. TIA!