Sad and confused?

So, to preface this, this is cycle #7 of my hubby and me TTC. We haven't really been overly zealous this last month, but then I started getting all kinds of weird last week: nauseous, tired 24/7, moody - it was different from my normal PMS. Then I was two days late for my period (I am regular on the dot, 26 day cycle), but today I started cramping for short periods of time, and bleeding lightly, all in all rather pinkishly and sparsely. Usually I bleed like crazy from day one and am in excruciating pain.

Now, I took 5 hpt and they were all negative, over the last week, but I still don't wanna lose hope.

Is there any chance I might be pregnant after all?