Had no period!!!

Hello all please help only be nice taken a lot to do this

So I not had a period since 20th February 2019 and it’s now 4th April 2019 well this the day off writing this any advice or any one had the same thing am trying for baby but had blood test come back negative I also had the mirena coil taken out on 19th October 2018

Please help with any advice or if you know what could be than you so much