I am agree with @sebastian because this is not good to make use of used toys for your new partner. It gave a bad impact on you. So i suggest you to buy some new sex toys. I can suggest you one online store where you can buy high quality sex toys on very affordable prices.
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I am not a expert of it but as i read it so i can say it can be interesting but may be it is risky aslo so be careful and get a proper training before implementing.
I am of 22 and we are in a relationship from 2 years and we ever made sex. He is very gentle to sex and nevr hurt. But from someday i dont know happen with him and he always to wild sex in a manner that i will not met him again.