Increased discharge

So recently I’ve noticed that I’ve had a lot more discharge (it’s white and very watery). I thought my period was starting a few days ago but turned out to be light pink spotting which has now completely gone away. Hubby and I had sex tonight and there was a large “wet” spot on the sheets after. Is this normal? Why all of a sudden the increase in cm throughout the day? And way more on the sheets tonight?