IUD info

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I think I want to get an IUD. 
Ladies tell me any info or personal experiences you've had whether it be good or bad. I'm scared of the pain when they put it in, but I'm sure it hurts a lot less then getting pregnant again. My baby is 4 months and I'm petrified of getting prego right now. Since my baby my lady parts aren't quite the same either, it hurts soooo bad for the first 5 min of sex, I feel like I was sewed up too tight from my episiotomy. The pain from sex is why I'm scared of the IUD hurting. 
Thanks!!