I did gain about 10 pounds. The other problem I had is that my husband would complain about the string (which is plastic coated or something) irritating him and he could feel it when we were intimate. It actually scratched his genitalia enough to cause a mark at one point. A few months later, he told me that he hadn't felt it for "a long time". I became concerned that it had come out, and, when, they couldn't find it with a (PAINFUL) exam, they scheduled me for an ultrasound. During the ultrasound, they found that the strings had gone back up through the cervix....
So, in 2 years when I have it removed, I will have to be asleep when they remove it..... I am not a big medicine taker and REALLY don't want to go through anesthesia for this, but, it has convinced me to leave it in as long as possible!