Hi , I had unprotected sex 3 weeks ago and it was a week before my period and I never received my period ? Should I be concerned about being pregnant. Also I took a home pregnancy test 4 days ago and it was negative

I would not say be worried, since if you were having unprotected sex you must be planning or trying to have a baby ? Correct ? Because if you did not want a baby you would be on birth control and using a condom. (at least)

You may be pregnant, esp since you missed your last period, but then periods are missed for other reasons at time

So what you are going to have to do, wait till the period is due his month, if you miss that period, wait till the week for that period is over, then do a pregnancy test.

Also do the test the very first thing in the morning as soon as you get up, with the first urine of the mornng. ** I am sure you did that before if you were follow he instrucions correctly

So wait until my period is due next month && test ? The last few mornings when I first get up I feel sick but it shortly goes away.. My boobs hurt a little but not too much.