Im dying to know

Hello all. I am dying to know if I'm pregnant. I took an ovulation test on march 2nd and it was positive for ovulation. My fiance and i had sex that day and the day after. Since then, my breasts have been sore,im starting to urinate more often and on the 11th early in the morning I had what I believed to be implantation bleeding. It was very light and happened about 7 days before my period was supposed to start. Im supposed to start on the 18th. Since that happened Ive also been having light cramps that come and go. For the past week Ive been having a very hard time sleeping,which is why I'm up at 4:22am (I thougt it was because im so anxious to know if I am or not). Im also becoming very gassy. Ive taken 6 tests in the past few days (I know,a little much but I am desperate to know and very impatient). Im starting to get really emotional thinking that Ive really gotten my hopes up and Im crying because I just want to know if I am or not and now im scared that im not and im going to be let down. ladies please help me out. Any input will be greatly appreciated. Thank you