Should I test or wait?

I haven’t had my period since December 20th. We have been extremely careful. The last time we did anything was on new years. I’ve been super nauseous and not feeling the best. I’ve never felt like this before. I can’t get enough of milk and cereal. I feel like I go through spurts where I feel like I’m going to be sick but I can calm myself down. I’m just not sure if I should wait it out or test.