Pill or IUD?

B
Hi ladies! I've been on the pill for as long as I can remember, maybe 4 or 5 years now? I'm not too sure. It's the only form of protection my bf and I use and in all honesty I like to think I'm reliable when it comes to using it and remembering to take the pill however I do miss a pill  couple of times a month. 
My friend just told me she's pregnant and was on the pill and it's really made me think if I should change my form on contriception? I really like the pill it's worked really well for me. I'm just wondering what your opinions are on the IUD and if it's worth using? Thanks!