Cramping..

Hi guys I’m hoping you can give me advise. According to my Ovia app I’m a day late but glow has my period due Wednesday. The same exact info is in both. The past week I’ve had on and off mild cramping in my pelvis area, I’ve been tired, everyday I get a stomach ache and few nauseous but it’s not an all day thing, but my lower abdominal area feels kinda different it feels full if that makes sense. I’ve taken a pregnancy test and it’s negative which kinda makes me think my period is still coming but then I was watching minions with my daughters and I just crying out of nowhere at some of the scenes that’s never happened before. Is it normal to have cramping for a few days like this? Haha so confused