After a few failed art cycles with an oblivious DH, I had him sit down in front of the computer and made him read the side effects of the fertility drugs, estrogen and progesterone - he was horrified that the side effects mimic pregnancy symptoms so closely and finally understood, at least as much as a man can, what I was going through each cycle; Sore bbs, crampy, starving yet nauseous, sleepy, teary, increased sense of smell and taste, bloated heavy feeling, head ache, etc...
Its a very cruel joke on mother nature's part
So the pp are right - there is no way to tell until you get those two lines, or the good news from your Dr.
" Some people built castles in the air. She constructed hers from mashed potatoes, which kept down demolition costs." Sarah Sloane, Borrowing Priviledges