Please read... And tell me what u think of these symptoms!?

For about 4 or 5 days now, my breasts have felt fuller, kinda swollen like. But my nipples are really tender to the touch, especially when I wake up in the morning, they're really sensitive... I have been feeling really mild discomfort in both sides of my lower abdomen. And yesterday while I was at work, I noticed some clear discharge. But it only lasted a few hours. My ovulation was between the 15th and 17th of June (this month) and my period isn't due till July 1st.. My cycle is about every 25 days. I haven't ever felt this before, Yet again I have no kids.. So I don't know whats going on with my female body parts lol. I have been feeling just god awful tired the past few days. And I noticed an unusual amount of heartburn. Poppin the tums more often! So anyways, I read online that this could be from stress, depression or pregnancy! My fiance and I have been trying to get pregnant since February of this year. And then all of sudden we just focused on other things and put getting pregnant away for a while. I have also heard that when You stop thinking about it, that it happens! So I don't know... But Im just curious on what this could be! I'm hopeful, now that some symptoms are present. I have had a few miscarriages a little more than a year ago, And heartburn and slight lower abdomen discomfort is what made me take pregnancy tests in the first place... I just want to get the public P.O.V! PLEASE HELP!