Hi dear, I have understood your concern and I will suggest you the best possible treatment options.
If you have history of regular cycle and also there is history of unprotected sex activity in the fertile period of the cycle means from day 10 to 20 of the cycle, then you stand chance to get pregnant.
If your
pregnancy test is negative and you still have any doubt, then blood beta HCG test and USG will be of help to confirm or rule out pregnancy.
If all your reports suggest that you are not pregnant then your symptoms can be due to hormonal changes.
I will suggest you to seek prescription support from your treating doctor for Tablet
Regestrone two times a day for 5 days to get withdrawal bleeding.
And antiemetic like Ondensetron and antacid like
Omeprazole and antispasmodic like
Dicyclomine for your
stomach discomfort.
Also opt for a healthy diet and regular exercise regimen.
Avoid refined sugars and deep fried foods and bakery products in the diet.
Start on
Folic acid and vitamin B 12 and
Vitamin E and Long acting form of vitamin B 6 and evening primrose oil supplements for at least 3 months.
Please get sex counseling done about safe and protected sex activity,this helps to prevent unwanted pregnancy and STDs.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar