Other contributors have said "Can you be pregnant by pre ejaculate if he did not fully ejaculate?" is the same question as "Can you fall pregnant from pre-ejaculate?" If you believe that these are not asking the same thing and should be answered differently, click here
Yes absolutely. So use a condom! Yes, you can. Pre-ejaculate still has the possibility of carrying sperm, that when introduced to your vagina, have the possibility of causing a pregnancy.