Taking pills to delay one’s period in order to perform Hajj


I am a sister who will be going to Hajj this year, inshallah. However I am expecting my monthly cycle to begin at around the time I have to so the obligatory Tawaf of Ka’ba.
I have therefore been advised to take a hormone tablet that my doctor has agreed to prescribe me in order to delay my monthly cycle until after I complete Hajj.
Please would you explain the Islamic standpoint of taking a hormone tablet to delay the natural cycle.