Hello and welcome to HCM.
Thank you for your query.
Firstly concentrating on the chances of
pregnancy. If the boy did not ejaculate, although the time of your period is a good time for you to become pregnant, if the boy would have ejaculated inside of you. As he did not ejaculate, and even the pre-cum did not come anywhere close to your insides, due to the use of a condom, there is a slim to nothing chance of you being pregnant.
Next, coming to your question on whether you can be sexually active? This is not a clear question. But, let me try to answer it from all aspects.
Ever since you hit
puberty, and started your menstrual cycle, you can be sexually active. This means that, if you indeed have unprotected sexual intercourse, this could result in pregnancy. The next way of looking at answering your question is by concentrating on the terms 'sexually active'. A sexually active person is one who practices sexual intercourse or contact at regular intervals. So if you choose to continue sexual contact with your partner, then you will be considered sexually active.
If you mean to ask if you are pregnant by asking f you are sexually active, I have already answered this question earlier. But, just to be on the safer side, is would be best to get yourself tested with a home pregnancy test (HPT). The best time to conduct this test is 2 weeks after sexual contact, and on the first or second day of a missed period. Mornings would be the best time for this test, as the urine sample is most concentrated in the morning.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.
Best wishes.