Hello my question is how can i stop pregnancy...

How can you prevent pregnancy ?
You can use medications that can prevent pregnancy within 3-5 days of unprotected sex such as Contraplan or Morning after pills . You should use it within 3-5 days of the unprotected sex .
What are the sign and symptoms of Pregnancy ?
There are many signs and symptoms which associates pregnancy :

• Breast pain .
• Delayed period .
• Nausea .
• vomiting .
• Abdominal pain .
• back pain .
• Positive pregnancy tests .

When can you perform pregnancy tests ?
You can diagnose pergnancy after performin few tests which and the tests include urine pregnancy test if your period was delayed and Blood Hcg level .
What to do now ?
Clinical assessment in the nearest medical center .