First - this is a question directed towards advanced practitioners of mindfulness or similar meditation.

I have been meditating and practicing other transformational work for about 17 years. Throughout the work, I've had many peak experiences, many "aha" moments, and I've experienced the deepening and expansiveness of my awareness and understanding. 

I've learned to be suspicious of any type of insight or experience that presents itself as "the answer" - in other words; I've had thoughts like "this is finally it! I got it!" So many times that I pretty much ignore that type of noise as soon as notice it.

Lately while meditating, I've become increasingly aware of physical sensations (neither pleasant or unpleasant) in my body, particularly around my upper chakras; and the overall - for lack of a better word - intensity of my experience is elevated.

As I allude to - I've never had a transformational experience that I considered "real" that came about with a bang - the worthwhile experiences are usually quite subtle - if fact my sense is that the essence of transformation is increasingly subtle rather than the other way around.

My question is, what do I make of my recent experiences? It carries with it an intensity that seems well, intense.

I recognize that more information is probably necessary to answer this; but in general terms, is this par for the course? Is it just something to notice, and let pass? Is it a symptom of something and/or, is there anything to do about it?
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> Is it just something to notice, and let pass? Is it a symptom of something and/or, is there anything to do about it?
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Treat the object according to your practice, i.e. for

Samatha meditation: 

* when mind wanders, bring it back to the breath.

Vipassana meditation: 

* every object is treated in the same way, there is no discrimination, i.e. no object is more or less important than the other. Note the object and return to the rising and falling of the abdomen.
The title and the question are a little different, but I'll try to address both. I think of meditation as a way to practice paying attention. When I meditate, I try to focus more on paying attention and less on whether the experience matches my expectations. 

Asking "What to expect from meditation?" is kind of like asking, "What should I expect what I stand outside and listen?". If you pay attention, you may notice things. What you notice will depend on your own circumstances. Some times nothing may seem to happen; other times, you may notice something dramatic.

An idea you may hear about in Buddhism is taking refuge in the Three Jewels: the Buddha, the Dharma, and the Sangha. In addition to asking questions here, if you're curious about the sensations you notice in meditation, you might consider seeking out a Sangha where you can share your experiences with others in a more intimate way than you can on an Internet site. I think a Sangha will often have a teacher who can help you investigate what you notice in meditation.