Embarrassing

This is very embarrassing, people don’t understand it until they have the same problem otherwise they’d think I need more showers but I really really need help with this problem I’ve dealt with for so long but haven’t wanted to do anything about it because I didn’t care so much until Now that I’m in a relationship I’m very very very I can not explain enough how embarrassed I am when I try to have sex my inner thighs are very dark I tried skin brighteners/lighteners but I I go in 2 weeks deep and see no results. I don’t have the money to see an dermatologist..... does any of you beautiful ladies have or had this problem or know anyone that can help ... I need anything that will work within a month or so just something that actually works ........ ****DARK INNER THIGHS!!!!!!!!****