Trying for #2

So we haven't been trying for long but I'm just so sad to think I'm not pregnant we have a child already but I've been dying to have another one my period was dec 23 and it said I ov on the jan 4 but not sure on how long everything is supposed to take I am having milky stuff coming out of for 2 days but I took first response today said negative could I have taken it to early ?? Does anyone know