I think I'm pregnant...

So I havnt started my af yet and I'm still due another 4 days...my pants seem to get really wet and I keep thinking my af is coming on but when I go to check it's just wet and no period! A week ago I saw a thick brown watery discharge I thought it's my period but I was wrong.. What could this be?? Btw I'm ttc so I'm hoping this is good news!! 😬