Could I be pregnant

Angel

So I have had the kyleena iud in for about 2 months now and since getting it I don’t have protected sex with my bf and he has came in me multiple times. I always thought it shouldn’t be an issue because the iud is 99.9%effective in preventing pregnancy. But lately my areolas are super tender and Ive gained a few pounds in the past couple weeks (only about 4) could I possibly be pregnant???