Symptoms caused by Femara?

R

When my doctor prescribed me Femara she warned me that sometimes the symptoms could be similar to early pregnancy symptoms. My question is, do the meds only cause symptoms while you are actively taking them (CD3-7) or do they continue throughout the cycle?

I’m asking because this is my first medicated cycle, its too soon to test (6dpo), but I’m having symptoms. I also don’t want to get my hopes up.