Typically, in cosmetic medicine, we refrain from treating women who are pregnant or breastfeeding for a few reasons:No studies have been done as to the safety for baby - and it's simply not worth the riskMom's body is changing a lot during these times - so not only may the problem the patient presents with resolve on it's own (like post-pregnancy weight), but any result we do achieve can quickly disappear, tooIn regards to IUD, the only treatment I'm aware of that a metal IUD is contraindicated for (that is FDA-Approved to reduce fat cells) is EmSculpt. The issue here being that electromagnetic waves could be absorbed by that IUD, causing some very painful and possibly very bad complications. Other IUDs are not an issue, just the Paraguard (metal) ones.It concerns me a bit that you're mentioning that you were instructed no caffeine or alcohol prior to treatment, because this is not something in the literature for EmSculpt, and that makes me question whether you're considering having one of the "lipo laser" pseudo-treatments that are not FDA-Approved for safety or efficacy that I am seeing advertised by a lot of spas, salons, and other inadequately trained professionals. Please only see a licensed and trained physician for any sort of fat reduction treatment. This recommendation is made purely for your safety.PLEASE, PLEASE, PLEASE: non-invasive laser lipo is not a thing - this is a marketing term being used erroneously. There is some other name for this treatment, a brand name. Ask to see the FDA-Approval for any treatment you are considering.