Woohoo! I might have some advice for ya! Ready?
Ok, first I don't want to sound pervy but can you describe what your orgasms feel like? Most might say if you aren't sure then you ain't havin' one but I don't want to just assume that they're not real. It's true there are some women who just can't have an orgasm and there are also alot who can only get it through clitoral or g-spot stimulation, but there are also those who can get it through penetration alone.
An orgasm is basically a climax. You ascend through pleasure then you decline. I'll describe mine maybe it'll help.

Ok, so before I orgasm I feel an intense pleasure, like the pleasure builds up and I feel like I need a release and my body starts to tense a bit, then I orgasm and feel a huge release, like my body just hit the peak of ultimate pleasure and the high is coming down, during which my body sort of pulses from the pleasure, like I can feel my heartbeat down there lol. Then when I descend I feel euphoric. That's basically the feel good endorphins hitting me in the face lol. Ok, well that's my description of an orgasm, god hope it wasn't too graphic lol. They're not all like that; I've had orgasms that were so small I've questioned if I've cum or not before, lol. But I tend to only orgasm through clitoral stimulation so my orgasm is focused in that region, I assume the feelings would be similar just internal when it comes to penetration orgasms.

So, if during sex you feel like a build up of pleasure but no release of it I think we can say you haven't had an orgasm.

If you think you haven't I would totally suggest masturbating. Not only will this increase the likelihood of achieving an orgasm (because you get to control the sensations and do what you like) but you also learn and explore your likes and turn ons. This could take alot of practice but I've heard the more you practice orgasming the more often and quicker you will during sex (assuming he's hitting the right spots!)

And Edenfantasys is the best place to be for this ish. There are so many different toys here that are perfect for beginners! I'd say take it slow and get something basic then work your way up. First though use your hands and experiment with different sensations a little. Then use that as a guide for picking out your toys. Example: try lightly tickling your inner thighs and lady "area". like it? order a tantric feather tickler or something similar. like fingering? get a basic small vibe, take out the batteries and try using that. move up to turning it on to get accustomed to vibes and see how you like it.

There are also some AWESOME articles here on EF in their SEXIS magazine. I'm going to link you a few. I hope they help!

link
link
link less