Odd period?

I started my period on the 31st when I was suppose to start on the 3rd. I’ve only bleed 2 days and have a little blood here and there to the point that I only need a panty liner and no tampon but this morning I woke up with period cramps, no blood, back cramps, and a pain that goes down my right leg that I get when I’m ovulating . My period is usually always on time so I’m a little confused if this is normal or not? My man and I have been trying to get pregnant could these bee early symptoms and not a period? Am I just over thinking this haha 🤔