Symptoms stopping? Advice? Experience?

So in the past week my nausea has subsided...breasts aren't tender...headaches are gone...fatigue is lessening and momma is freaking out.  I am 11 weeks tomorrow...I have had 2 US and we had heartbeat and normal results at both.  Last one was at 9 weeks and baby was active and strong HB around 170....am I just easing out of the 1st trimester blah...or should I be worried?