Hii I'm 18 and married we had sex two weeks ago and now my breasts are sore and way more heavier and bigger also I have been spotting for the past three days can it be that I'm preagnat or what can it be other than that?

Yes, you could be pregnant. It could also be something else.

Make an appointment with your Physician OR consult with a Pharmacist and buy a home pregnancy test kit and use it.

First its not a good idea to piggyback your question on someone else's. This can lead to confusion. You should start a new thread. So I've moved your question to its own thread.

Any time you have sexual intercourse there is the possibility of pregnancy. Two weeks is a bit early for taking a home pregnancy test, but you might want to try that. Or just see your physician.