*stupid spell check* populated= ovulated lol
That u may have ovulated. From the time it went missing until u get the cycle back on track u may still populate r use protection for now.
My advice is check the clothing u wore in the past few days, it may be stuck on a pair of underwear or a shirt or whatever. Then u can pinpoint when it came off, just for piece of mind. Good luck.
I used the patch for about 3 yrs. I guess the first question would be, did u have unprotected sex up to five days before u put the week 3 patch or have u since u noticed it missing? I ask because sperm can live up to 5 days inside u. While u had on week 2 patch u would not have populated. Once u put week 3 patch on and it came off, there is achance