Hello Good Evening,
You seems not a pregnant, because you had a period after your unprotected sex.
Following clues help to find that you are not pregnant:
1. You had unprotected sex on 04th July, might be in infertile period of your menstrual cycle.
2. You got a menstrual period after sex, which totally rule out your
pregnancy.
3. First sign of pregnancy is missed period, so you can not be pregnant due to sex on 4th July, and got period on 22nd July.
4. Now you feeling symptoms, those are of next menstrual cycle, not of pregnancy.
5. It is the time of your next cycle, around 27-28 days from the last cycle, very ideal duration.
So be relaxed, you are not pregnant, since you had a period after your unprotected sex.
If you are not agree then go for a urine pregnancy test.
Regards,
Dr. Naresh Jain.