The pill is tried and true. One should stay on the daily "every morning" or "every evening" routine. BUT even then, the pill is not 100% effective. Withdrawal BY ITSELF is less so. I don't say this to discourage you or scare you; a doctor will tell you the same. The pill is such a "sure thing", it should be OK in any way you wish to finish, inside or withdraw. Use a spermicidal foam if you are not bothered by the addition of a chemical. I advise against chemicals in most cases. A weekly meeting is one thing, but if daily or near so, this constant contact with a chemical is what I would not like. As for the pill, after 5 years, I'd suggest quit. If you have children by then, and want to have 100% protection, get a vasectomy.
If you plan a life together, and a pregnancy happens, well, children ARE a part of life. All the best!