2nd trimester sickness

Any mommies out there in the second trimester and still feeling bad. I'm 15 weeks and still have all day sickness. Vomiting has stopped but nausea last all day. I'm even taking diclegis. I'm also still very tired. I haven't gained much weight yet. I have no baby bump at all. Any moms out there like me? Have you found out the sex of your baby yet! This pregnancy is so different than my previous pregnancy which was to precious boys. I have a strong feeling this one is a girl.