How old are you? First of all....
I got pregnant and I did'n find out till the 3rd month because I did'n have any "pregnancy symptoms", even right now (i am 36 weeks = 8m) the only thing that people notice is my stomak :p I still work and plan to for 3 - 4 more weeks, I can clean go shopping etc. Sooo nothing here... Thank god that you don't have anything.... Some ladys have all the symptoms, get sick, are tired all the times..... Etc.
So just dont worrie if your doctor sais it's ok just take it easy, to me it doesen't sound bad at all, now, I would worrie if my stomak is cramping if I start bleading, etc. Than I would worrie but I think you are ok.