IUD concerns.

So I got an IUD in December 2017. I know it takes around 6 months for your body to get used to it and for it to regulate. But it's now June, and revently I've been cramping like crazy. I cramp all month. I spot all month, and its annoying and painful

Should i get it removed?

2 weeks ago I had unprotected sex with someone. He came inside of me. Just to be safe I took Plan B, even though I have the IUD. Yesterday I noticed my areolas are slightly darker, and my boobs are tender. Do you think I could be pregnant or is it just an overload of the hormones in the Plan B and my IUD. they both have the same hormone and I think taking the Plan B was too much for my body. I've been cramping even more since I took the Plan B.

I guess I just want to know if anyone has had a similar experience and what you did about it.