IUD and Oral Sex

So I got my IUD, skyla, about two

Months ago and I've had regular sex fine till now, but I've been avoiding oral all together. My IUD still makes my bleeding irregular and while it's light I can never really tell, so for the sake of avoiding that uncomfortbality I've just been saying no to oral. My new partner recently wanted to go down on me, but I had to stop him and explain the whole IUD situation, but I do really want to go back to receiving oral. What has been your guys' experience with this and any advice?