Anyone a nurse maybe or..

Have had this happen..
Ok so when I have sex and we both get off if I masterbate while we have sex my right foot gets warm like I can feel it warm up in the middle of my foot and it distracts me..
I can't get off with a penis I'm one women who will admit it..
So clitora is my option and hubby says it's a turn on.. So as I'm doing so hands or a vibrator it makes my right foot only in the middle of it warm as heck not to the touch but I can feel it..
Weird huh??
So anyone else have this it's never happens before I was pregnant now I am 19 weeks 5 days as I'm told I've been having this since week 13..
Anyone wanna take a guess or know??