Blood results

After many months of trying I finally got the doctor to start investigations. He arranged blood tests which have confirmed I have ovulated. He now wants to do more blood tests in 8 weeks time. I'm a bit upset by this as 3 vales of blood was sent away to be tested. I know I'm ovulating as I use OPKs so I feel that there is a further delay. I feel so in the dark and clueless on what exactly is happening, I thought they were testing for more but obviously not!