we look to intent when there might be questions about interpertation.
"I ask, Sir, what is the militia? It is the whole people. To disarm the people is the best and most effectual way to enslave them."
"A militia, when properly formed, are in fact the people themselves …"
Richard Henry Lee
"And that the said Constitution be never construed to authorize Congress to infringe the just liberty of the Press, or the rights of Conscience; or to prevent the people of the United States, who are peaceable citizens, from keeping their own arms; …"
this one covers not only the 2nd, but the 1st. there is your answer to plan B and birth control paid for by those who are against it as a matter of concience.
"Firearms stand next in importance to the constitution itself. They are the American people's liberty teeth and keystone under independence … from the hour the Pilgrims landed to the present day, events, occurences and tendencies prove that to ensure peace security and happiness, the rifle and pistol are equally indispensable … the very atmosphere of firearms anywhere restrains evil interference — they deserve a place of honor with all that's good."
"The supposed quietude of a good man allures the ruffian; while on the other hand arms, like laws, discourage and keep the invader and plunderer in awe, and preserve order in the world as property. The same balance would be preserved were all the world destitute of arms, for all would be alike; but since some will not, others dare not lay them aside … Horrid mischief would ensue were the law-abiding deprived of the use of them."
there's more, but you get the idea.