Late period possible pregnancy

Hey!!

So I’m 3 days late (I bought tests so going to do one in the morning if I don’t come on) but has anyone felt like they knew they were pregnant? What does it feel like? I feel so strange it’s unreal like I feel sick but don’t want to be sick, I’m constantly hungry and by belly feels like it’s doing flips all the time I can’t shake it, my boobs don’t hurt but they didn’t with my last pregnancy, only part that hurts is my nipple which is just weird, only time I feel like I’m about to be sick is when I brush my teeth (same in my last pregnancy) I’m just so confused, I get the odd little cramp but nothing period like, my cramps are usually the worst

Help! Do you think I’m crazy and I’m just late coz I’m over thinking or is it a possibility (we are actively trying for baby number 2 so I’m hoping I’m cooking a bun right now)