I really want this to be true

My last period was due on the 29/05/2011. I started bleeding on 25/05/2011 it was very light ranging from very light pink/dusty rose colour to brownish colour. This lasted barely 3 days with a brownish spotting on the fourth day. my periods are always arrive like clock work and are of average to heavy flow, lasting 5 days. since the monday after my period was due (30/05/2011) I've been feeling quite queasy and neaous worse in the evenings with heartburn (which i've never had before) my breasts have become increasingly sore and tender to the touch especially along the outer sides, i can't bare wearing a bra and my nipples are extremly seneative and have slightly darkened in colour also my breast feel heavier with a tingly/ pin and needles sensation to them. I keep getting strange headaches, feeling dizzy, having trouble sleeping at night. Feeling strangly bloated with a bubbling or butterfly flutter seneastion. i seem to be as my fiance puts it moodier than usual. one min i want to scream at someone the next i just feel very teary. I took a preg test on 29/50/2011, 04/06/2011 both of these were negative. I had a blood test done monday 06/05/2011 and i get results tomorrow. My fiance and i have been trying to a baby for nearly 4 years i really want this to be true but i really don't want to get my/our hopes up cos we've had our hearts broken in the past. This is the first time and of these symptoms have occured after my period was due. could i be pregnant? PLEASE HELP!!!!