I don't think it's impossible to feel signs of pregnancy at two weeks. I am 8 weeks pregnant and when I think back I felt my signs about a week after the baby was concieved, I just didn't know I was pregnant so I didn't realize that that is what those signs were pointing to. I didn't have morning sickness but I definitely had breast tenderness. Also, when I had sex with my bf I felt like it was more uncomfortable than usual when he went deep. Also I ate a lot more and peed more often. So yes, I think you can feel signs at only two weeks. But the other part of that is if you worry so much about it you will have sort of a false pregnancy. This happened to me once, I was so worried that I was sick every morning and my period (which is regular like clockwork) was over a week late. But the day I took the home test, my period came. All you can do is wait about two weeks and test, but don't worry about it so much (i know thats easier said than done). Also I am only 19, my pregnancy was unplanned, and I will be here if you need to talk or just need to vent. I will try to help you in any way I can. Good luck.