My girlfriend has been on bc for about a year 80% of our relationship. Anyway, I recently ran across a website selling herbal pills that reduce or counteract the negative side of birth control, that she gets almost no sensation from g-spot stimulation (I can almost always make her climax orally tho, im skilled at that), but the herbal pill says that the birth control will still prevent ovulation

http://www.herballoveshop.com/product.asp?PID=1018

but half of the reason I enjoyed the sex so much during the earlier parts of our relationship was seeing her recieve pleasure from me being inside her, and its not that i dont still enjoy it and love her very much, but its just something that i miss a lot and i know makes sex much less satisfying for me because even when i orgasm i often feel like it just wasnt as good as it used to be

I am just looking to see if anyone knows about this at all, or of any other way to counteract the negative effect of no sensitivity internally,

Thanks