Hello doc please help me out here my periods...

Are you Pregnant ?
Actually , there is a chance of pregnancy in your condition as you had an unprotected sex around your ovulation date without using any method of protection . 
What are the sign and symptoms of Pregnancy ?
There are many signs and symptoms which can increase your suspicion of pregnancy , and these include :

• Delayed period .
• Nausea and vomiting .
• Abdominal and low back pain .
• Breast pain .
• Changes in appetite .
• Positive pregnancy tests .

When can you perform pregnancy tests ?
You can confirm pergnancy by doing pregnancy tests ( After your expected period date ) and the tests include :

• Urine pregnancy test if your period was delayed .
• Blood Hcg level .

What to do at the moment ?
Pregnancy tests is not accurrate immediately after sexual intercourse . It takes pregnancy hormones few days to develop and to be detected in urine . So , you need to wait until your expected period date to perform the tests .