Any advice help idk something ahhhhhhh

Justine
Hey Everyone I have a ? My partner n I have been ttc for a while now and with glow it's been pretty accurate with the start and finish  of my cycles well we had unprotected sex 4days before my ovulating stage and again on my first dAy of ovulation I am now 7dpo and of course been very impatient so every test I take is negative is there any chance I can  be pregnant. I am experiencing sore boobs slight cramping like I am gonna start and some back ache which isn't all that bad and of course the wanting to get sick feeling :/ could this all be in my head I don't remember any of this except the throwing up part for my first pregnancy 4 years ago help