Maybe tmi but very curious

So i went to the loo today to find a very thick (but not sticky or gooey) milk white discharge in my underwear. It didnt at all smell nor did it contain any funny colour. Just pure white. And slightly just smell if bleach almost like a mans cum. Only, i havent had sex in months lol. And in clean of any kind of sti's or std's so was wondering what this could be. Im currently 24 weeks along