Is it normal to miss a period?

I got my period in June and July. But during my July cycle I’m not sure if I ovulated and I didn’t have that clear stringy discharge that I normally have. My August period was supposed to come the 11-16 but I didn’t get it. I’m on cycle day 44 now and it’s very odd. Could I be pregnant or is this because of stress, hormones or something like that? I’m really freaking out as this is so uncharacteristic and I’ve never really missed a period before.