Feeling sick

Anybody feeling sick randomly? For the last week or so I have been getting random waves of nausea, and I’m 9 weeks pp. we did EVERYTHING in our power for safe sex because we don’t plan on another baby right now but is it possible my IUD failed? Just got it put in about 2-3 weeks ago. Maybe I’m going crazy? I am taking my prenatals everyday (which maybe could be making me feel sick) and also breastfeeding