Hello there.
welcome to health care magic forum..
Get a ultra sonogram done.It will help you to rule out or confirm
pregnancy. once its done she need treatment with hormones to regularize her cycles.
I would advice you to either follow
safe sex method or OCPS for
contraception because
I pill is not always good..
Consult a gynecologist and discuss about further management of your wife's condition..
hope this helps..
take care..