Husband is leaving..

Im 2 months pregnant and my husband just asked for a divorce.. im so broken. We are only 20 and 22 and our last was a miscarriage. Apparently ive been so hard to be around and weve had this problem even before i got pregnant. He says hes serious and he cant live life unhappy with me treating hom like shit anymore. What can i say to make him stay?? :(