In about 3 weeks you can take a pregnancy test. It is too soon to tell just a week after. But it sounds like it could just be your period starting
Yes you may be as unprotected sex always has a risk of pregnancy! You could be experiencing spotting as a sign of an egg implanting, but you will not know for sure without taking a test. You would be able to get a positive test now if you were pregnant, so I suggest getting one and taking it first thing in the morning when you go to the bathroom.
You can take a test whenever, but it is most accurate with a first morning wee as your hormone level would be higher then say evening, if you were to be pregnant!
If it is negative and you still don't get your regular period then wait a few days and take another test.
Keep in mind it takes most women 14 days after ovulation to get a positive test. Most women with a 28 day cycle ovulate 14 days after the first day of their last period.
This is true @Kjens12. But I was thinking if it was implementation bleeding then its around 10dpo so a positive test may be possible. Either way you will have to take a test to know for sure :) @Popsglick05
*sorry implantation bleeding. Stupid auto correct!