100MG Endometrin side effects?

Hey guys... I am 5dpiui (finally! making some progress!) and starting 2 days ago my doc had me start one 100mg Endometrin once a day (in the evening) so I took it the 1st night.... no biggie.... then I took it last night, and I woke up this morning I wa sooooo sick to my stomach! I didnt actually throw up, but the desire was there STRONG. I seen nausea is a side effect but mostly for women who have to take it 2 and 3 times daily. I only take it once an evening, and have only taken it 2x. Now... you know where my mind is right? (ohhh!! ohhhh!! Maybe its a pregnancy symptom!) but I hear its to early for those, although..... you never know right? Some people feel symptoms real real soon. Now the nausea is starting to subside. Has anyone else had this while on this Endometrin? Or had pregnancy symptoms 5dpiui? Help me!