Stomach/leg rashes (un)related to WLS?

Guys, I'm a bit over five weeks out from surgery, down 40 pounds from surgery and 65 from eleven weeks ago.  For a couple weeks I've been having red rashes on my upper legs and stomach, nothing too bad but irritating.  Is this something others experienced, i.e., is it potentially related to the WLS (loss of tension in the skin, vitamins, I don't know)?  I've had problems before with laundry detergents, so I assume it's more likely to be something like that, though I haven't changed detergents recently.  I thought I'd ask here before I yell at my dry cleaner.

I had a lot of leg pain and skin peeling but I was told it was due to the large amonts of antibiotics thay gave mne to get my kidney functioning that tried to quit on me after WLS.  I'd recommend gettign ti looked at by my surgeon just in case, so it dfoesn't get worse.  The better safe than sorry routine.  It could be a deficient on something or a staff infection which can be extremely serious if unattended.  Not worth the risk in my book. Good luck with that.  Let us know when you find out whats the cause.  Might enlighten the rest of us.