My 2 year old has separation anxiety so bad I can't even leave him with my husband without him…

My 2 year old has separation anxiety so bad I can't even leave him with my husband without him crying the whole time.. I am a full time stay at home mom I worked for 2 months when he was about 10 months old other than that he is always with me.. he has stayed with family but never for more than a night and now being stationed so far from home that's not even possible. so my question is have any other moms had this problem and wat did you do?? with just my husband working we can't afford to just put him in day care and I really don't wanna go out and get a job right now due to our second son is due in just a few weeks and my husband is about to deploy and I don't wanna be working every day while he gone.