Worried, no sickness 😟

Shannon
Hiya, this is my 3rd baby. With my other two, I had morning sickness from the word go! Right up until around 15 weeks. But this time I have no sickness what so ever, I'm around 5/6 weeks. I am constantly tired and have very sore boobs and constantly going for a wee but no sickness, I'm so worried something might be wrong 😬 has anyone else had morning sickness with one pregnancy and none with the next? 
Thanks!Â