Hello mam, thanks for trusting health care magic.
just do a urine pregnancy
test and if negative get pelvic ultrasound
and hormone assays viz Thyroid function tests
to see for the cause of this altered pattern of periods.
and visit your gynecologist with reports as early as possible.
In case you have further questions you can consult me on health care magic forum and i will be happy to help
Take care and wish you all the best.
Dr Manisha Jain.