Weird feelings

I have been trying to have a baby with my SO and his mom has been saying she wants grand babies. Anyways we’ve been going at it. Lately though, this last ovulation cycle, I’ve been having a lot of weird feelings. My appetite has been changing slightly, I’m usually pretty basic and picky and eat the same stuff. But slightly been venturing into other foods because I feel

Unsatisfied or something doesn’t sound good. My stomach has just been feeling weird the last few days, almost

Like a sick feeling but not actually getting sick. Random headaches pop up here and there. I just hope I’m pregnant but my period doesn’t come for another week or so. Did anyone else know they were pregnant right Away? Could you feel it Could You tell? Would just Love some opinions or advice.