Hullucinating my boyfriend?

alright so after spending a whole weekend with my boyfriend i was a little upset to leave him but had to...i went back home and monday night and tuseday night i had hullucinated that my boyfriend was with me sleeping with me in my bed if felt so real like he was there i would even touch him it felt so weird....like i was half awake half sleep when this happend the first time..i woke up from my sleep and there he was then i would touch him and then look away and look back and he would be gone it kept happening alot that night....then tusday i really woke up from my sleep and thought he was there i huged him and swiped my hand down his body its like i was really feeling him and then my cat started puking and i looked away to see if she was ok she was still puking so i look back to my boyfriend and he isn't there................im so freaked out i don't know whats going on or why my brain is doing this.....i told my boyfriend and my mom about it they don't know what to say they don't know whats wrong someone please help i would like to know that im not going crazy lol its really freaking me out need help