Need some advice! Pleaaaaseee

Hey ladies can someone please help, so I don’t really know if and when I’ve ovulated this cycle as I’m always a day or a few out when it comes to AF the last few days I’ve been feeling very nauseous, headaches and dizziness which is really not normal for me at all!! I’ve also been experiencing sharp cramping like pain in my ovaries region, what do you recons best to do? I wanna start testing but don’t want to get upset if it’s a BFN, I think I should be due AF on the 10th of Feb but I’m not 100% so I know it’s way early, i can be irregular sometimes, it’s just starting to do my head in! Any feed back would be brilliant 😭😭