S_kay_k
yes you could quite possibly be pregnant as you said you had sex a couple weeks ago which would have been around the time you were most fertile, condoms are great to protect against std's, but I wouldn't rely on them for birth control. As for the spotting, some women do have spotting when they fall pregnant, due to the embryo atatching itself to the lining of the uterus. You said you are tired, and that is a sign of pregnancy but I would have thought it would be a little early to have those symptoms just yet. I would expect that at 5 - 6 weeks but everyone is different. The chest pain and dizziness I would be concerned about, that doesn't sound so great, i'd be making a doctors appointment on that one. In the mean time I swear by home pregnancy tests to give you a rough idea, then when you go for your doctors appointment, ask for a confirmation, they will do a blood or urine test depending on your doctor. Good luck !!
Suzy