Is it a sign?!

I went to visit my grandparents grave, I pray to them as well when I'm having a hard time, I sat there thinking about all the memories and was very happy. But then I thought, please just help me conceive my second healthy baby. I instantly had a weird feeling in my tummy. Then the next day I went to work. When I came out to my car on break, my car was completely covered in white flower petals, but my bosses car was clean! You think this could be a sign?