Hi Shellb
I wouldn't worry too much. I think being in any relationship is like being on a roller coaster: you have good times and times less so good.
I've been with my husband for 40 years, since I was just 17. I love him dearly, we have tons in common, my goodness we've grown up together, BUT he drives me up the wall sometimes!! If you think about it though, it's the same with any relationship, be it with parents, children, friends or partners. I think too that marriage isn't always easy, you have ups and downs. Sometimes you have to work hard to get through tricky periods, sometimes it can all seem a bit flat for no reason.
Of course it doesn't help when the hormones are going like the clappers. When you're feeling low, fed up with the constant onslaught, it is far too easy to look at things negatively and everyone takes out their dissatisfaction or angst on their nearest and dearest. (Think how bloody awful teenagers can be to their parents!).
We enjoy doing lots together but equally have our own interests that we pursue separately. That suits us but every couple will be different. Have you analysed what it is that you are concerned about?
I wouldn't worry too much, I bet you will probably feel differently in a months time. You love him dearly, he is the most amazing loving supportive partner - it seems to me that you don't need to worry too much!! xx