68 million is considered as a good sperm count
The motility 50% is average.motility means the ability of the sperm to travel in the uterine cavity
to reach the fallopian tube
.however,the percentage of abnormal sperms and wbc's(pus cells) is high.in case pregnancy takes place with an abnormal sperm,there are chances of a malformed baby or abortion.i recommend you tomeet a general surgeon
who would examine your testicles and advice for a semen culture and doppler ultrasound of testicles as required.
A long term antibiotic course should also be taken for increased wbc's.