Ok so my bf and I are very serious about each other, we're planning on getting married. He has a daughter (almost 2yrs old) and I have a daughter (4yrs old) my daughter lives with us full time and we get his daughter 2 days a week sometimes more....well we accidentally got pregnant and now I'm scared of the strain its going to put on our relationship. His daughter is very needy with his attention and very jealous of me and my daughter and I see this turning into a huge stressful situation.....advice?