I need my own period/menstruation calculator and calendar for my website where ladies can enter in the date of their last period, how many days in usually lasts, and be able to calculate when it's going to happen. Here are sites, these are examples of what I am looking for. THANK YOU!!
http://www.mymonthlycycles.com/calculate.jsp
https://always.com/en-us/period-calculator
http://www.babymed.com/menstruation-menstrual-period-cycle-calculator-calendar
https://tampax.com/en-us/period-tracker
http://strawberrypal.com/
Must be able to use on my site
i will give you menstrual tracker & calculator for your website. i just give you the scripts. 
as like-
https://tampax.com/en-us/period-tracker
https://always.com/en-us/period-calculator
thank you. if you have any question then contact with me.
hello there. i fully understand your requirements from description given by you.the idea is already sounding great and i assure you i am 100%
confident that i can bring out your desired task with my expertise. i
will be glad to hear response from you and to help to make beautiful
task for your company.
best regard
take care
