please advice thoughts ive posted like 5 different times and no ones helped yet

I have the mirena IUD but with my first baby I cramped like a week or 2 before my period my period is supposed to start in 4 days I cramped a few weeks ago for like a week or two I've been telling sick and back pain and cramps in my feet which I only got when I was pregnant I've been super moody and my boobs feel bigger and are sore my nipples are so sensitive I feel a bit more tired than usual I tested a week before my period an got a negative I go to the doctor in a few days and plan on testing the day I go