COULD I BE???

I been TTC for 5 years but with no methods, didnt know anything about tracking ovulation or nothing...Period is puntual as a needle..Last cycle is only cycle that i bought preeseed and Fertile aid for my Husband..He has low sperm so we didnt have any sex for two week before i ovulated.When ovulation time came i told him its go time and we did it for all 4 days of fertility window...Used preseed plus the pills he been taking..at 8 dpo i felt a cramp and then it left..Now my period was due 2 days ago and it didnt come...I usually get constant cramping 4 days before my period, i never ever ever miss a period,.also i know my body well... not even cramping indicating that it may come later on this week...I tested with cheap test strip but it says negative...I tested today with First response and says negative...I am sooo anxious, i want to be pregnant sooo badly...What could be happening?? Preseed work so fast..is it that powerfull..I been feeling woozy yesterday and day before, not today..Could this be it??? Am i too early to test?? .dont know what to do, please share your wisdom!!