Definetely not.

I was a blood doner when I met my partner. I was constantly asked/reminded that having casual sex partners would ban me for six months from donating; I have a fairly uncommon blood type for my country, so I was very keen on not being put on "quarantine".

When we said it was the right moment for us to be together, I went to make a donation before and warned I would not be donating for the nexy six months for obvious reasons.

I was thanked for the warning and about two weeks later received a full bloodwork panel, including STDs, attesting I was clean and as safe as possible.

When I did return for my next donation, when asked if had been with new sex partners for the last six months, when I replied I was still doing the same, since my last visit, everyone laughed.

Never pressure anyone into unprotected sex. Ever.