Could I be pregnant?

My SO and I have been ttc for a year and 9 months. We have experienced 2 chemical pregnancies along the way. Ever since my last period (maybe just a few days after) my breast have been sore every now and then and my nipples sore to the touch. Today I noticed a little spotting. I should not be getting my Period . In fact my fertil period just started yesterday. I did not have any of these symptoms with either chemical pregnancy. And I have not experienced spotting during ovulation. When is the right time to take a test? What insight do you all have for me?