what's wrong with me

I've been having symptoms of being pregnant for 2 weeks now but all of my tests keep coming back negative or inconclusive but that doesn't stop sore breast, achy back, migraines, dairy cravings, or random vomiting when smell changes are to intense. I don't want to be pregnant right now, this would throw a tiny human wrench in all my plans. plus financially not reayldy. we used protection but I guess that wasn't enough. I had a day of spotting then nothing for the next few days and then one day of heavy bleeding followed by 4 days of spotting. He says if I am pregnant well just have to be the best parents together even though he already has two. what do I do hugs I'm scared.... I just need to know of I'm pregnant or not.