Rash!!!!

[JulMoongoddess]

Hi!  I have a question about a rash that has popped up...kinda everywhere.  I am overweight and my belly hangs down (I've been losing alot of weight), but this is nothing new.  The rash IS new.  I've NEVER had something like this.  I noticed the area around my belly button was itching...I looked at it and there is a tiny rash around it.  This isn't the bad part.....I noticed that my inner thighs were itching terribly and I looked at them in the mirror....this rash was bright red and covered my upper inner thighs and anywhere my belly touched it.  My actual vagina doesn't itch...just everything around it.  I wondered if it was a yeast infection (I have never had one, so I don't know).  I can shower and wash it very well with soap and water, clean it off, but if I try to wash it again with a washcloth, there is still odor mixed w/the soap smell.  It smells horrible.  Keep in mind, this is RIGHT after I have JUST washed it.  I have been using Vagisil and baby powder.  What is this and how do I get rid of it???? Thank you!!!!