Hi there, I have understood your concern and and and I will suggest you the best possible treatment options.
First of all do not panic.
It can be due to some bleeding from
cervix may be from cervical erosion and or polyp.
Secondly, your menses might be about to start.
Also I will suggest you to get morning's first sample of urine tested for
pregnancy at least 20 days after your first episode of unprotected sex activity.
In case of any doubt blood
beta HCG test and USG will be of help.
Please try to understand that even in absence of periods, ovulation can occur and if you have unprotected sex activity, then there is chance to get pregnant.
Please seek prescription support from your treating doctor for antispasmodic like
Dicyclomine, to help you out with
abdominal pain.
I hope this helps you.
Thanks
Dr Purushottam Neurgaonkar