Loss of sexual drive. In kolkata.

I am in a relationship with my gf from the last 1 year. Initial 2 months before the lockdown, we had a good sexual life.Although we din have intercourse but did have oral sex few times n it was good. But all of a sudden from the last few months her interest in sex is totally lost.Neither she wants to discs anything related to sex nor she wants to be intimate . We even met few times in some private place n went on a 2 day trip but whenever I tried to be intimate it seemed she lost her sensitivity n she felt tickling in neck n tummy area which were earlier very sensitive. She started to not like me touching her in her clitoris which she enjoyed a lot earlier. It isn't that she isn't comfortable with me or connected with our relationship problems.even she doesn't know why all of a sudden her desire to have sex lost. We are planning to marry this year and we want to have a very happy and healthy marriage and sexual life. Please help or if possible suggest some good doctors in Kolkata.