Hello mam, thanks for trusting health care magic.
You should do a urine pregnancy
test now itself which if negative get a pelvic ultrasonography
and b HCG
testing because it can be an early pregnancy or worse ectopic tubal pregnancy and then visit a gynecologist with reports.
And from next cycle onwards start using a regular method of contraception
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