YEAH!!! I am so so so happy for you!!!
As for feeling alone... I totally know how you feel as I have been there, done that! Me and my DH actually split up during my 2nd pregnancy. Our relationship is 100% better these days (has been for the past 7 years), but man... it was tough being pregnant and alone with nobody to share the joy with. If you ever want to chat, feel free to PM me. In the meantime... please take it easy and don't be so hard on yourself. I don't know what your situation is, but right now you and your baby are most important. Hugs!!