Emerita Progesterone Cream experiences

Im 43 and in perimenopause for 2 years now. Main symptoms are serious anxiety and mood swings.
If you use the Emerita progesterone cream, any tips and tricks? I started using it last week and slept like a baby and it really reduced my anxiety. I changed the application area from inner thighs to abdomen and woke up with a really bad stomach ache and nausea. I didnt eat anything new or different and no one else in my family feels like i do. One time i applied it on my forearms and it made me really sleepy and almost immediate nausea. I want it to work but dont know if its ok to not alternate the application site.