Im so confused!!!

I've been ttc for a looong time now and we all know how that goes. But here recently I've decided to take a break from doing all the opks and pregnancy tests and so on. We still had sex around my fertile window and I had some spotting before my period but now here I am a week and 4 days late. I took a pregnancy test a week ago and it was negative and I've debated on taking another. I've never missed my period by over 2 or 3 days but I don't feel pregnant. Is there any way I could be?