Light period, bad cramps, small blood clots (like the size of a dot)

I just started my period today and it seems to be light (like my pad did not fill up) but usually I’m a heavy bleeder, especially day two. But I did have really bad cramps and a lot of constipation. I noticed my color was darker than usual. I did start to have usual blood clots and then some that I did pee were like the size of a dot LOL. Is this normal? Will I be fine? Am I pregnant? Took many tests and all were negative.