Ahhhhh!!!

Morning all,
I had my period 23rd Jan -27th Jan... According to Glow my fertility increased yesterday (31st Jan) and it suggests I will ovulate around 3rd Feb ....
However, I have been using the clearblue digital ovulation kits and I get just a "O" I've been testing for a few days (4 days) and all have been the same.... I'm worried should I rely on these tests?? It only took 6 weeks to get pregnant last time we TTC.
I keep telling myself that I should be worried or make myself become stressed but we both want this so bad! Am I just reading too much into things??