In the 2nd Tri symptoms do tend to settle for most women, and like Novella suggested, seek further appt(s) to acknowledge these worries that you are holding onto. After TTC &/or m/c it's hard to have faith that Mother Nature will allow things to be perfect for us, but you have to have hope, or you've really got little else. I remember feeling the same anxiety about the 2nd trimester, and then my baby kicked me from the inside, and I nearly drowned in the wave of relief.
Enjoy your growing baby, who can hear your heartbeating inside of you. Celebrate everyday, and seek the positivity.
xxxx