Precum

Hi, me and my boyfriend engaged in sexual intercourse about 5 days ago. However, we did not have sex, he only fingered me. But i was wondering i had felt a watery like substance on his penis, is this pre-cum. If so, i saw him touching his penis at times and im afraid it got on his fingers and may have entered my vagina. Lately, i have been having an increase in vaginal discharge. Is this a sign of pregnancy, also i have been having pains around my lower stomach and hips. I also just go tmy period at the end of 2006 and it is still irregular so i dont know what to do about making sure my period comes at the right time. I feel like it is very unlikely but i am so scared. Please help me and tell me what is going on? thank you