Quoting babyfever101:" I have the iud. I just noticed i dont remember getting my period this month & i really dont know when ... [snip!] ... My boobs are sore & im so freaking tired all the time. I have a friend who got pregnant with the iud & had a lot of issues."
I got pregnant this time while on nuvaring (not the same thing, I know - but it's BC) and I only noticed being constipated until I was like 8 - 9 weeks along. I think that sometimes BC can kind of mask the symptoms, you very well could be pregnant - is there a way for you to get a blood test done, just to be 100% sure on everything?