No period but negative tests

Hey guys, so this is my first time ttc (we have been for three or four months) and everything so I don't know what's normal quite yet. But my period was supposed to start Feb 14th and hasn't yet. I've taken two tests (both red dye and brand First Response) but they were both negative. I know I'm not THAT late, but my period is SO consistent. It's always right on the dot, maybe occasionally a day early. But I'm never late. I also started getting pretty mild cramps a day or two ago, but that happens sometimes so it's nothing new. I was pretty sure I was pregnant but since the tests aren't showing that idk what to do. Are other tests better? Should I just wait it out? 🥰 Any help is appreciated