Im on the pill but i was put on these antibiotics that messed w my pill a little, my boyfriend & i always use the pull out method as well as the pill just in case! about a week ago, 2 days after id finished the antibiotics, we were having sex and he thinks he may of cummed in me just a tiny bit where i didnt move quick enough, since then ive been feeling really sick after i eat or drink anything other than water & i did throw up last week, should i get a prengancy test just incase?