Possible symptoms

Leyanne

So my SO and I have been trying to get pregnant for 5 months with no luck but this last week or so I'm feeling different, my nipples are MUCH larger than usual and slightly darker, I have terrible heartburn, and the most horrible metallic taste in my mouth that comes and goes, I'm not due my period till next week but I did have a period last month but not as heavy/clotty like normal...could I be pregnant?