Weak Orgasms

Hi, so the last few weeks I've been masturbating and my orgasms have felt extremely weak or felt non existent, the only thing that tells me that I've come is the slight pulsing.

I've been masturbating for like 7 years and never come across this issue

I'm only 19, I've been on the same anti depressants for just under a year so I cant imagine they're gonna affect my orgasms now.

Anyone had the same problem? What did you do to help it?