بسم الله الرحمن الرحيم
(Fatwa: 670/559/B=05/1435)
There is no harm as per the Shariah; however it is said to be harmful medically. If it is possible for you to go for umrah after your menses stop and you are clean then it is better.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
