So confused!

Hi guys.

I'm so confused about whether or not I'm pregnant. So I'll give you a quick back story, me and my fiance already have an 8 year old daughter. We decided to try for baby number 2 when she was around 3 years old. So we have not used any contraception in 5 years and I have never gotten pregnant. Anyway my cycles normally last anywhere from 28 to 33 days, they are normally closer to 33. Today is day 41! So I'm about a week late. I have been taking tests everyday for about a week and I swear in some I have seen the faintest of faint lines but on others I've seen nothing. I have had some cramping and just feeling generally uncomfortable in my stomach but nothing else really. If I was pregnant it should be showing on tests by now right? I'm really hoping this is our time but feeling very doubtful! If you have read this far thank you I no it was a long post. Xxx