The Aloe should be fine to use until you bring her to the vet or a triple antibiotic ointment should be ok... please still bring her to the vet, especially if this has been going on for a while... getting a dog in to be seen sooner is better than later (and usually cheaper to, if you take your dog in at the beginning signs of something wrong, instead of when they are already really sick when the vet will have to work harder to get them better thus costing more $$)
It is possible that she is allergic to the flea medication you are putting on her and that is causing the problem... have you tried getting her on prescription flea meds they really are the best prevention against fleas... perhaps when you bring her in this week you can talk to your vet about flea prevention... bring in the stuff you are putting on her the vet might want to take a look at it.
I hope your dog is feeling better soon, give her a belly rub from me

__________________
~Ignorance can be cured with education~
Mom to:
A little girl (6) and a little boy (4), and 2 dogs

Leo and

Gunner
Proud Coastie Sister!! 
My brother is in Virginia at FT school !!
RIP Ed

October 2000-November 2007