Am I possibly pregnant?

Lori

Been trying to concieve this month. Been taking elevit & folic acid for over just a month now. Baby danced 1-2 times a day during my fertile window & now I haven’t gotten my period, which usually comes around 18-20 at the end of each month. I’ve been tired & getting little creeping up headaches, also a runny nose past few weeks. Took pregnancy test other week negative. Opinions please ladies??