I had never heard of this product and so did some research. Didn't find much specific to side effects of the film but did for nonoxynol-9, which is the spermacide used in the product. It can produce allergic reactions, UTIs, dermatitis and other responses including eventual thinning of the vaginal walls and it is absorbed into the body. Get on line and look up the spermacide, avoid the advertsing sites, there are some site directed to medical professionals and get down to the site effects and reactions.
The film itself has other ingredients which are considered inactive but which you could still have a reaction to. Inactive just means they are aren't part of the product's primary purpose.