Help, help, help!!!

[Klh0313]

Question and I hope someone can help. I was 5 days late starting my period. But when I started it was very light and has remained that way ever since (I started on July 11th). I took a pregnancy test after I was a few days late and it was negative. Coukd I still maybe be pregnant? I know my nerves are shot over this. I've always been regular (I'm 32). I have no clotting or cramps or anything, and it's really only there when I wipe. I don't know if I'm nauseous because of my nerves. But I use an ovulation calendar on my phone and we had sex just before and after I would have ovulated. Has anyone ever been through this????? This is my first time posting and I'm really hoping to get some good answers. Thanks!