my husband beats me

it all happened while i was at work two days ago after he dropped me off after we just had a big fight he goes to the carnival in the town where i work at and met this random drug dealer and then drives to philly and buys 250 dollars in h and needles so he can deal them at his drug thing that he goes to make money...(i had no clue) anyways yesterday night when i had to go work he was acting strange and his mom let me use her car so while im at work and hes sleeping so she searches his car and found 20 bags of h and then flushes them down the toilet! when i got home he told me i got really upset and he brought up my past told me to f off all this stuff trying to justify it but he was just taking the angry out on me so basicly he told me to pack up my bags and leave and im crying i dont know what to do so that night my ex texted me and told me he misses me and loves me out of the blue it wsa 4 in the morning and i was depressed thinking my husband was done with me so i texted back i miss you too i need you... cause i was afriad of not having a place to stay so 7 in themorning he wakes me up yelling in my face calling me a slut and told me to leave he was angry and he took my phone and whne i went to grab it he meant to push me away but he punch my in the face right in the jaw he says he was so angry he didnt remember but i think hes trying to cover up should i leave him? i dont know what hes capable to do anymore im always afraid to do anything now hes been verbally abusing me for a month now since we got married and it just getting worse plz help or suggestions