Just a quick observation about the end of a sentence. The end of a sentence is its most emphatic part. So what you want to put at the end is what you want the reader to come away remembering. Here's a sentence the way it was originally written from an article I recently edited.
"Still, some doctors advise avoiding sex in the last few weeks of pregnancy as a general safety precaution."
What is the most important thing for the reader to focus on? It's not the fact that there's a general safety precaution. It's when sex should be avoided. Moving the final phrase earlier in the sentence, puts the emphasis where it belongs.
"Still, as a general safety precaution, some doctors advise avoiding sex in the last few weeks of pregnancy."
Now the reader has a much better chance of remembering the advice.