Watery semen. My condition so serious?

Hello there The problems you described indicate towards PREMATURE EJACULATION & slight ERECTILE DYSFUNCTION. Please stop masturbating right now. At least for 03 months from now, don't listen, watch or think anything which excites you ....otherwise your sexual health might face big irreversible damage ( i m reaching this conclusion on the basis of whatever you told). The best thing about your problem is that it's completely curable if you strictly follow the indications (03-06 month treatment is required). But to plan a perfect treatment, we need to have a direct conversation with patient ( telephonic talk if patient is not from delhi & allahabad) in order to chalk out the exact underlying cause ( if required, medicines can be sent through courier)

avoid fast/ junk food/ drinks completely

Hello... Firstly stop mastrubation. And the way  you have mentioned about all, is due to shukra dhatu kshay. It means the body made up of 7 dhathus According to Ayurveda. And your Last dhatu means Shukra is disturbed & Less, so we have to work on all dhatu from 1st to 6th. We will make it that datu good in quality & it will take 7-8 months. Don't take that sanyasi medecine, it is not useful for your condition. You need to consult.

Consult Ayurvedic physician.