Is it OK for me to feel jealous and sad but happy for her???

I started babysitting her when she was 5years old .. She is now 19 and has just found out she is pregnant. My hubby and I have been trying for 6years in Nov of 2010 I lost my angel to miscarriage at 5months 2weeks .... We have been trying for a rainbow baby since then with no luck... I am happy for her but I'm also jealous and sad.. I've helped raise her and now she is pg.. Idk how to feel and I can't bring myself to go see her although she is like a daughter to me... Please let me know yalls opinions