Semen should be thin or thick please clarify . my semen is very much thick?

Semen consistency : After ejaculation, the semen is typically thick and milky-white. After approximately 10 min, it should become thin, clear and runny.

Depend ....: The viscosity of semen widely vary among men and even within a man over time. Either way, it doesn't matter as long as being comfortable and working well for fertilizing. Generally speaking, in an individual, semen is thicker if not ejaculating often and thinner if more often. In functional sense, its viscosity doesn't matter.