Dealing with Father's Day

So I know I've still got a month but I'm terrified. It has been 5 months sense my dad passed away from a 2 year battle with inoperable and incureable stage 4 cancer. All his doctors say he was a walking miracle. He lived 2 days past my daughters first birthday and he was buried on my 22nd birthday. I'm now pregnant with my second child and the pregnancy hormones are making grieving a whole lot harder. I have broken down crying so much this month it's not even funny. Anyone have any advice on how I can survive Father's Day this year??