Marriage Problems!

So my husband and I have been married for two years and we have always been as happy as ever. Of course we fight and go on like any other normal couple, but as of lately things have started to feel weird. It’s been about the last month to two months, that he has been getting annoyed easily and/or it seems like he may be trying to fight or find reasons to get mad. For example, he likes to take naps and he always tells me what time to wake him—- well the other day I went to wake him and he got angry, saying that I never just let him sleep for as long as he would actually like to. And that’s just one of the things he has gotten annoyed with lately.. Maybe it’s just me being insecure but I’m so lost and I’m hurting. And no there isn’t much outside stress going on right now, and nothing huge in our lives is happening at this moment, so I’m confused on where this might be stemming from. I don’t believe he would cheat or anything like that, and our sexual relationship has not changed.