Thank you for staying online,
I am sorry to hear about your problem, and I can understand how uncomfortable you may be feeling, but hopefully, we can resolve this.
The symptoms you described include having a delay in the period, and other symptoms can be due to various causes.
You had unprotected sex, so first, you can have a pregnancy test.
The most reliable time to take a urine pregnancy test is one week after you have missed a period(expected date of your period). This will provide you with an accurate result. Waiting one week after a missed period will usually give a more precise answer.
If this test comes out to be negative, then other causes of delay in the period/missed period are considered accordingly.
So first, you can have a pregnancy test.
Morning tends to be the best time to take home pregnancy tests because hCG levels in urine are concentrated after a night without much drinking and peeing.
So you can have a home pregnancy test in the morning.
The First Response Early Result manual is the most sensitive over-the-counter pregnancy test you can buy.
I hope I have been able to clarify the situation for you and helped in resolving your query.
I am available to answer any follow-up questions you may have, so please feel free to ask.