feeling different

Alysha
Ladies i need any advice you can give, 
Im in my second trimester now week 16 and i couldnt be any happier ive come this far but i was wondering if any of you had abnormal abdominal pain that would come and go? Also did you still feel like you were pregnant in your second term, lately i have just been feeling like a fat blob like nothing is in me, but occasionally i do feel nausea and headaches are still around. Have any of you beautiful ladies had this same thing happen to you? Any advice will help calm my nerves thank you in advance ladies this is my first pregnancy after our miscarriage back in 2016 jan, also i did call my obgyn all she said was take tylenol and drink lots of fluids but i have been and still not much comfort.