Burning in legs and painful throbbing in the V

I wonder if anyone can help. I have had MS for over 2 years now abs fist noticed when my whole right side went numb. Over time with the injections I have got some sensations in my right side. But for the last 3/4 days on the top of my right leg I have been getting a burning sensation. Today I have noticed I’ve been getting some sort of throbbing/ dull aching sensation in my V. Does anyone else get that? No I don’t have a STI or anything like that