What’s going on?

A few weeks ago, hubby and I had sex for the three days leading up to ovulation and I was almost positive that I’m pregnant. I took one of those early result tests last week (5days before my period) and it was negative. My period is now 2 days late and I got another negative pregnancy test this morning. I’ve been having weird symptoms, like really vivid dreams, swollen hands, extreme mood swings. There are no signs of my period coming (usually I have cramps the day or two before, but nothing the past few days)