are these pregnancy symptoms????

I had my period 2 weeks ago and it's due on the 15th November I've done a couple of tests and they've all said negative so it may be too early to test this app said it's my past day ovulating so I've got 8% chance of pregnancy but I've been having bad stomach cramps like you'd get with a tummy bug and I've been feel nauseous but not been sick once . This has been going on since Saturday afternoon and I've had cramps like I'm on period not major but pulsing cramps my boobs have been a little sore I've been majorly tired and that's not normal for me and I've been feeling light headed and hardly hungry can anyone help me I take a test and it says negative !