I need help!

Okay so I didn't track my ovulation this month. Just was going by what glow has said. Well I just realized my cycles are usually 29 days. Period is usually 5 days long. Last period was July 29-aug 2. Glow has me due for my period on Sunday? Which technically wouldn't be right.. so instead of me being 2 days till af I'm actually like 6 days from af. 2 days ago came down with a horrible cold, headache, back ache and tender nipples happened yesterday. I have tested the last 3 days but maybe I was testing too early now that I realized glow was wrong? Helllppp. When should I test?