TTC, help!!

My last period started on the 14th of this month. On Glow, my most fertile period is from the 22nd-28th with my most fertile day being today with expected ovulation to be on the 28th. (14 days from my next period as it always is) however I just took an ovulation test today and it said I won't be ovulating in the next three days. Is it possible I may have already ovulated? Or has all our efforts this month been in vain??? Helpppp