I went to my doctor and asked him if there was something wrong with the way i ejaculate and he told me "the plumbing is fine" can a medical doctor on here please give me a clear answer to what he meant by this?

The main sexual organ of the body is the brain. The external parts just service that function. I interpret the docs' statement as meaning the pipes are clear and not the cause of the issue. You may want to consult a urologist who specializes in sexual problems. This is relatively common.

'Plumbing' is usually referred for urinary passageways and the meaning should have been explained to you. If there is any complaint re. ejaculation pl see a Urologist. Always have a doc explain her/his findings to you to your satisfaction before you leave the office

I think he meant all the parts of your body that physically work to ejaculate are working normally. For example your testicles and penis and prostate are working normally. This implies that the problem can be psychological or emotional. Consult a urologist for specific advice.