Strings and Sex

Hi guys, I got my iud about 2 weeks ago. I just started having sex again and my partner says the strings are very painful for him. I am aware it can take 2 months for the strings to soften and coil up. I am wondering if there is anything else I can do? We try different positions but have yet to find one that doesn't hurt him. I am contemplaiting asking my doctor to shorten my strings but then I could risk a difficult removal in the future.