My partner, love of my life, just passed away while being 4 months pregnant

I just the lost the love of my life and the father of my first time baby yesterday from an accident. I could not believe it. I felt like I lost my life but I'm still here. I'd like to go with him but my baby.... am I allowed to grieve? And that with crying and sadness, would it my hurt my baby, too? I dont know how to continue from here.