Do you think I'm pregnant?

I am very impressed that you protect yourself. Good job to both of you.

Implantation bleeding happens when the fertilized egg implants onto the wall of your uterus after traveling through your fallopian tube. It is a very small amount, usually pink in color and sometimes women do not even notice this. It is common for this to happen close to the time a regular period would have started which is why sometimes it is mistaken for a light period. This type of bleeding would not happen twice in one pregnancy. You could not have had two implantation bleeds consecutively. Most likely they were your periods. If either was implantation bleeding, it would have been the latter.

Some women experience similar signs of early pregnancy when it is close to starting their period, tender breasts, water retention, fatigue, clumsiness, cramps, etc. This makes it more difficult to decipher impending period or pregnancy.

If you experienced motion sickness, that would have been during the time you were in motion. As soon as your equaliberium was stabilized, the motion sickness would have gone away. There are so many reasons you could have been experiencing some nausea. Bad food, stress, virus, among other things.

The home pregnancy tests available today are certainly extremely accuarate with a 1% chance of giving false results. The most common false result is a negative. If you are pregnant and taking the test too soon, there may not be enough of the pregnancy hormone, HCG, to be detected yet. You could wait another week or so to see if your period arrives. If it does not, you could re-test. A positive home pregnancy is very reliable but you should always follow up with a doctor.

From what you described above, I would say you have nothing to worry about. He was protected during penetration and did not ejaculate.

I hope I have answered all of your questions.