Rainbow baby????

So my husband and I woke up to this morning funny thing is we just lost two kids too i had a miscarriage in February 2019 on my daughter's 3rd birthday and his son die May 21st 2019 so when this have been moody and been crying over everything my cycle came brownish color and very light flow lasted 5 days and i was a day late please explain your answers and so thats means a baby is in making right!!!