Should I test today, and whats the best brand?

Crissie
My norm af was 3/24-3/28. I had a two day af 4/21. Checked my cp and its hard to reach but I can feel that its closed, my cm also had a pink tint to it last night. AF is due today and the only symptom I have is a headache (norm for my af) and my breast are sore an noticeably bigger (not norm for my af). Please advice is greatly needed.