well,
first of all , if your periods are late by 18 days, best is to rule out pregnancy as even after
vasectomy , for a period of 3 months the sperms remain in the
epididymis and can make you pregnant. untill and unless his 3 continuous sperm culture have been negative already.
still get an urine pregnancy home test done with a beta hcg kit. if negative then the option of opting for a withdrawal bleed can be considered with progestins like
medroxyprogesterone acetate.
at our clinic we advise only after a pelvic
ultrasound and after checking the endometrial thicknesss more than 5mm. we prefer MPA 10mg twice a day for 5 days. the bleeding should resume with in 7-10 days of the ;last dosage.
in either case an ultrasound is helpful.
also with ongoing pains already, you may be in
premenstrual syndrome phase and you may get your periods naturally in next few days.
so best is do a preg test and if negative nad period dont resume in next 3-4 days , opt for withdrawal bleed.
regards,
dr.sameer kumar
in case of direct query , you may contact at:
http://doctor.healthcaremagic.com/doctors/dr-sameer-kumar/68814