Possibly pregnant?

Okay ladies, I have had a headache the past fews days and nothing seems to help. I have been so nauseated I don’t feel like eating. I’ve been tired all the time. And here recently I have gotten the metal taste in my mouth, I felt like i was sitting there with a penny on my tongue. I had one invalid test and one negative. Suggestions on where to go from here? My last “period” wasn’t really like a normal period and it was the 16-18th of this moment. It didn’t last as long and I didn’t have any big clots like I normally do. Not to mention my emotions have been crazy and mood swings have been AWFUL! So i’m just confused on what’s going on with my body! Thank you in advance.