screaming

So my 6 almost 7 month old baby girl just started this phase where she screams BLOODY MURDER when she's not with me or someone else holds her. It is very tiring and idk of its gonna end or not. Anybody else have this problem? Am I suppose to discipline for this? How would you even discipline for this? I have tried letting her just scream but I feel SO bad and pick her up or take her back within a minute to w minutes. Does it get better or stop eventually??