Nausea

I have a 16 month old and found out a few days ago that I’m pregnant. There will be 2 years and approximately 2 weeks between them. When I was pregnant with my son the nausea hit me at 6 weeks. This time it hit me last week, before I knew I was pregnant (about 3 weeks along). Has this happened to anyone else. I’m so nervous about feeling horrible bad having a very energetic toddler to run around after 😢