Internal vs external orgasms?

Ca

Does anyone ever actually orgasm from penetration alone?

I am not really sure if I ever have, if I have it was hard to tell. The best orgasms are always from clit stimulation for me but it doesn't usually work during sex because my hubby gets a little too intense with his thumb. So basically he has to finish me afterwards...

Just curious if it is normal for me to only cum from clit stimulation?