BETA question: please HELP!

Hi ladies!

My first beta was exactly seven days ago which was 116 (Monday), I went back three days later and it was 337 (Thursday). I went back today for a third BETA & my question is, around what number should I expect? Around what number should a healthy BETA be as of today? It’s tricky calculating after 4 days that’s why since my last BETA was Thursday, and today is Monday. Would I base the “doubling in two days”, off my last draw which was 337? In this case would I multiply 337x4 to have the number to expect from todays BETA draw? Please let me know any feedback, thank you ladies!!