If you need to know if she's pregnant, you can draw blood and send it in yourself. UBRL does preg testing. Other labs do too. She is probably not and just getting hormonal (ready) for fall.
If you want to know if your buck is a wether and you can't get down to ask, separate him off with another male and wait a few weeks. Rut is coming and you will know because they will show you more than you EVER wanted to see.