Worse than sepation anxiety- any advice? ive been told that its seperation anxietythat my 8 mth old?

baby is going thru... its making me crazy... she just began crawling and standing so when i leave the room she crys and crawls aftr me. She screams and crys like in terrible pain, and husband cant even comfort her. not even just when i leave the room. I can be in on the couch w/ her on the floor and she cries and trys to come after me.even if im on the floor n my attn is elsewhere I cant get anthing done let alone have a second of "me" time. I try to clean whle she naps but even thats only for an hour. toys occupy her only for a few minutes. I'm trying to go back to work but I am scared to leave her because all she will probably do is cry when I am gone. I love playing with my baby and I try to dedicate at least one or two hours a day to just playing with her undistracted but I cant do it all day.i need some advice if anyones been there. i let her cry but she just cries more and crawls 2 me. i try her walker ect while i cook its still really hard please help