It's difficult to find teenage pregnancy rates before 1972, let alone multiple sources, but if you look at Guttmacher's numbers both teenage pregnancy and abortion rates ramped up significantly between the late 1970s and early 1990s. See https://www.guttmacher.org/sites/default/files/pdfs/pubs/UST... Teenage abortions rates are even more difficult to find before 1972, but abortion certainly existed in the 1950s, and given the birth rate it's possible teenage pregnancy rates were also higher in the 1950s and 60s.
Also, notwithstanding that the data does coincide with the given narrative, one must also consider socio-economic and cultural factors--pregnancy, birth, and abortion rates aren't homogenous across groups. For example, the OP (or their girlfriend) could have been from a segment of society at the trailing edge of a trend.
It's difficult to find teenage pregnancy rates before 1972, let alone multiple sources, but if you look at Guttmacher's numbers both teenage pregnancy and abortion rates ramped up significantly between the late 1970s and early 1990s. See https://www.guttmacher.org/sites/default/files/pdfs/pubs/UST... Teenage abortions rates are even more difficult to find before 1972, but abortion certainly existed in the 1950s, and given the birth rate it's possible teenage pregnancy rates were also higher in the 1950s and 60s.
Also, notwithstanding that the data does coincide with the given narrative, one must also consider socio-economic and cultural factors--pregnancy, birth, and abortion rates aren't homogenous across groups. For example, the OP (or their girlfriend) could have been from a segment of society at the trailing edge of a trend.