Im 18 years I had sex with my boyfriend last week wendesday 9 he came twice on me, on Saturday my feet were very sore was feeling really tiredness then we had sex Monday on again the14th he came twice again and today is wednesday16th I'm feeling nausea and vomating I can't eat anything because don't feel like eating was asleep the hole the day and went twice to urine without drinking water am I pregnant

Far too early for any symptoms.

@Curlyben but are they any possibility that I might be pregnant I'm only have my period end of the month

You had sex, so YES it's a possibility.
You will have to wait for your next cycle.

Anytime you have sex there is a chance of being pregnant. The only 100% birth control method is abstinence.
You need to test with first morning urine two weeks after you miss your period.

Thank you very much guys but one more question why am I feeling like vomating, tiredness and low apitite nauseaness? I haven't had this before and I know my body I'm not feeling like myself lately

Mostly thank you to everyone that answered me

Thank you very much guys but one more question why am I feeling like vomating, tiredness and low apitite nauseaness? I haven't had this before and I know my body I'm not feeling like myself lately

Which could be a completely unrelated sickness that you've contracted through means unrelated to all the unprotected sex you've been having. Could be a coincidence.