Give it time or get help?

Vanessa

I just got the paragard IUD because I have a really big fear of becoming pregnant that it was taking a toll on me mentally even if I would avoid having sex on my fertile week. Well I had sex for the first time since getting it and it happened to be when my “fertile week” should’ve been happening and I still made him use the pull out method. I have noticed that im still feeling uneasy about it. Should I get professional help or because I see so many stories of the IUD failing should I keep being careful?