Worrying for no reason?

My boyfriend & I have been together for 4 years now. We’ve of course have had our ups & downs but everything is good otherwise. For the past 2 1/2 weeks we’ve just been a little off...sex wise. We usually do it every 2-3 days, but for these past 2 1/2 weeks we’ve been doing it once every 5-7 days.

My bf has been stressing about finals & college football & hasn’t been able to relax much. I know that there have been times before where things like this have affected us & this is what happened, but we got back to normal within a week or two. Like I said, it’s been 2 1/2 weeks now so I’m worrying quite a bit. My bf keeps reassuring me that nothing is wrong & that it’s because of all the other stressors, & that we’ll get back into very very soon. He’s been kinda teasing me & touching me this whole time...but we haven’t done it for 6 days now after a week of not doing it for 6 days as well. So we’ve had sex about 2 times the past 2 1/2 weeks. He told me earlier today that he wants to eat me out later but I don’t wanna get too excited about it because sometimes he falls out of that mood.

Is this normal for couples? Like we should be getting back into it but it just hasn’t happened. I know he reassures me all the time, but I hate worrying about it, as he tells me I’m worrying for no reason at all.