He girls it me again just here wondering and nervous hope ya have the answer to this one.?

ok here i go. i've been tring to get pregnant for about 2 3 months already. well the first month failed along with the second. here we are on the third. its a little weird though cause i dont understand whats going on. on may 18th i started my period then on june 21st again so i noticed that when i finished my period the month before on that date i start the next month so i was supposed to start already ive hardly ever late. yet i have not started my period this month, but i have had like little pregnancy symtoms here and there. like the headachs and the cravings the tiredness dizzyness wanting and felling like throwing up also and my husband he has been cravying things too like extra pickles on his burgers and he is not a big fan of pickles and he will eat the whole ones and eating ice cream and like i said he dont really eat that stuff cause he is not a big fan of them. everytime i take a pregnancy test it comes out negative. so i dont know what to think. what do ya girls think