Do you belive in Spirits ,ghosts?

I used to always believe in ghosts and spirits but never had a really strong first hand encounter until last year. My dad passed away last year and lots of strange things happened. 3 days before he passed away, I was on a phone to a friend, saying "I wonder if there is really life after deat or is it just some stories?" As soon as I turned off the lights, there was a loud bang on the table in the bedroom. My dog started growling but I dissed it and told him to be quiet. 5 minutes later, he started again, this time looking slowly around the room. I looked but saw nothing. No matter how much I told him off, he kept growling viciously through the whole night. When my dad passed away, I once said in a prayer, I hope that he'l be looking after me. The next day I set my alarm clock at 5am, wanted to wake up to study. I woke up at 5am, turned off the alarm and went back to sleep, thinking that I'll wake up at 6am but I didn't set the alarm. I had a really strange dream. I was lying in my bed, in my room, I felt it all and then suddenly there was a shadow in my room, coming towards me, telling me, "wake up, it's 6am". I got really freaked out and woke up. As soon as I opened my eyes, I grabbed my phone and it was 6am and 30 seconds!! The last and strangest one is again I had a dream that I was sitting in my room and then my dad came in. I knew in the dream that he has already passed away so I started talking to him, asking him questions about how he was doing. He said he was well and then took a piece of paper and pencil and started writing down some numbers, telling me that they're very important. I woke up and could only remember the last two digits. I told my mum who told our maid who then went to buy underground lottery ( we live in Thailand and quite a number of people buy underground lottery). The two numbers that I remembered happened to be the last of the 6 numbers that came out for lottery that month. All the maids have won some cash, enough for them to buy themselves something nice. Strange isn't it?