Could Zoloft Have Led To Loss Of Sex Drive And Inability To Reach Orgasm?

Hello. I am a 23 year old male. I am 6 1 and weight 185 pounds. For the last several years, I have had difficulty achieving orgasm through sex or masturbation. Under perfect circumstances, I can orgasm around thirty minutes after the start of sexual stimulation. I am not currently taking any medications, but I have taken generic Zoloft in the past. While on the Zoloft, I had very little sex drive, and orgasm was almost impossible. I stopped taking the medication eight months ago. The problem I am having is now the same as it was before I started the antidepressant. I do not drink often (less than ten beers a month), but I do smoke cigarettes. I started smoking again a little over a year ago. I have seen a doctor about this before, but he seemed to think it was a non-issue. I did have blood work done at the time (approximately six months ago), and the results showed I had a slight iron deficiency. I was told everything else was fine, and that I should take a multivitamin. I am writing this in hopes of learning what I can do to correct my problem. Are there any supplements or medications that I can take to help me? Thank you in advance for any advice you may have.