Could I be pregnant? I am far to early to test yet but...

I am 23 and am now 9 days Past Ovulation and am due my next period on the 13th of June. For the past 4 days I have been terribly tired out and my breasts have swollen and my nipples have became hard and sore, the areas around there have darkened and have dark blue lines through them. Since yesterday I have been suffering with bad cramps like my period was about to arrive however had no sign, still having the cramps today but not nearly as sore as yesterday. Today I am having a lot of clear watery discharge and I mean enough for me to have to wear a panty liner. I never have these kinds of pains before my period unless its the day after I have started and don't usually get this amount of discharge unless ovulating. I have also being feeling rather sick but never being sick for around 5 days now which is around the same time I started to feel tired. I am far to early to test yet but would just like to know whats going on.