You'll probably be surprised to know that this is a pretty common question with an answer that may be unexpected based on what we've been taught about how things "should" go.
The first thing you really need to understand when you're thinking about this is that the vaginal canal itself is not particularly nerve-rich. If you think about that logically, it makes good sense. From a reproductive standpoint, people with vaginas need to be able to give birth via the vaginal canal. If we had lots of nerve endings and lots of specific sensations in that area, giving birth would be an incredibly painful process throughout. In fact, I'd guess (and this is just a personal opinion) that if we had a really high level of sensation there, humanity wouldn't have survived long because nobody would be wanting to give birth ever.
Regardless of why people with vaginas are built that way, the simple fact is that they are. We don't have a lot of nerve endings in that area. So if you're expecting to have a lot of feeling in that area, it's just not going to happen. You may have some general sensation (like stretching or fullness, for example), but not a lot and much of what you do feel will be felt in the outer portion. Most of the nerves that are in the vaginal canal are concentrated in the first little bit of the vagina. This is a huge part of why most people with vaginas won't orgasm from vaginal intercourse alone. You do, however, have lots of nerves in your external vulva and clitoris. If you're needing more sensation, you'll want to incorporate activities that include stimulating those areas (either during intercourse or non-intercourse activities). Somewhere we've gotten this cultural idea that vaginal intercourse is the sort of be-all-end-all and that it should be crazy pleasurable for people with vaginas on it's own (heck, pick up a grocery store romance novel if you wonder where some of those ideas come from), when that just isn't the case.
So rather than worrying about feeling more from just vaginal intercourse, how about finding activities that DO feel good for you? If you want more sensation during intercourse, then work with your partner (or on your own) to find ways of stimulating those bits that are nerve-rich. You can also experiment with other activities or positions that place more emphasis on those areas.
Check out the following links for more information:
- Advice: The Great No-Orgasm-from-Intercourse Conundrum
- Innies and Outies: The Vagina, Clitoris, Uterus, and More
- Sexual Response & Orgasm: A Users Guide
- 10 of the Best Things You Can Do for Your Sexual Self (at Any Age)
- Be a Blabbermouth! The Whats, Whys and Hows of Talking About Sex With a Partner
- Yield for Pleasure