Nausea

Jasmine • Mummy to boys Zhane 7, kassius 5 and step mummy to Layla 8 xxx
I'm 10+2 and have genet felt nausea through out this pregnancy.. It's my 5th, but I only have 2 children. At the moment I've started feeling ok in the day, but terribly sicky in the evenings. I've also been having chronic indigestion. Any ideas. Could I be carrying a different sex than before? I have 2 boys