Hi there, I have understood your concern and I will suggest you the best possible treatment options.
First of all do not panic.
It appears that all your symptoms can be due to anxiety or like
premenstrual syndrome.
It being your first sexual activity, you might also be thinking about getting pregnant.
As you might be aware that missing period is the most important sign of
pregnancy.
So please wait for the expected date of menses. If you happen to cross your dates then please get morning's first sample of urine tested for pregnancy. In case of any doubt blood
beta HCG test and USG will be of help.
If you start your periods then you are not pregnant. But these symptoms can be due to premenstrual syndrome.
please seek prescription support from your treating doctor for Long acting form of vitamin B 6,
Vitamin E,
folic acid and evening primrose oil, for at least 3 months.Opt for a healthy diet and regular exercise regimen.
Please seek sex counseling services for safe and protected sex activity. This will help to prevent unwanted pregnancy and STDs.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar