your thoughts?

Elena
Hi ladies, need your advice. 
I've had blood work done on 28/02 which showed no ovulation, another test on 8/03 showed that I ovulated during that week. We BD'ed on 28/02, 02/03, 04/03. Today(14/03) is CD 41 and no AF yet, done a couple of pregnancy tests which came negative.  My cycle varies 30-38 days. 
I know I should wait another week or so home tests can catch the HCG and my nurse said to wait at least two week after the 8.03 and only call her if AF comes. 
Although I have no pregnancy symptoms yet but can't stop thinking that I might be pregnant already. 
What do you think?