2nd pregnancy - feeling awful. due Feb 2018.

I'm absolutely exhausted. This is my 2nd pregnancy and I have never felt anything like it. I feel constantly unwell. We are currently on holiday in Spain and I can't enjoy anything I keep having migraines with aura so I can't see. My sickness returns every so often and I've got the most horrible sore throat and ear. I'm falling apart. I don't know what to do and I'm really struggling and I need to be there my 3 year old and my husband but it's a massive obsticle that's in my way. I want to feel better, I must add that my first pregnancy was a breeze so this is probably why I'm so shocked with this pregnancys issues. 
Please don't say I'm the only one :-(