Hi everyone! I am new to this forum, and I would like to ask, How long do clomid side effects last in the body? About three years I was prescribed clomid for the first time. I got pregnant on the first cycle at 50mg and I had a baby boy who will be three years old next week. Now my husband and I want to have another child, so I started clomid on the 19th of september (5-9). My estradiol level is 350 and breasts feel really really sore, along with the nausia and uterus discomfort. I took my last clomid dose two weeks ago. Can this be clomid side effect or can this mean that I have concieved?