Weird symptoms

So I have been having some weird symptoms, for instance my smells are way heightened and certain smells make me sick. I am tired all the time, not just sleepy but exhausted. I have massive headaches but only in the morning and at night and I'm super nauseous during the day. I had a normal period but have been trying to conceive. I took a test a few days ago and it was negative. What should my next move be and why would I have all these symptoms?