Help I don’t know what to do

So I don’t want to say I am 100%TTC but I would love to have a baby. The thing is I was suppose to get my period 10 days ago and have not received it. Before all this a couple of weeks ago I was spotting, I’m crazy emotional and extremely nauseous. I have taken two tests one didn’t work at all and the other I couldn’t really tell but they were both like 88 cents I am scared to take a test and it be negative and be completely heartbroken. What should I do!??