Is there any way to predict when you will get pregnant

So I did the ring test n it’s got me puzzled n wanting to know more

Well I got cool results from the ring n hair thing over ur hand n it worked n was true did it 5 times all said same thing ... my 1st was a boy unfortunately he past only lived a week so I’ve always n been wanting a so bad sense... anyways 2nd girl 3rd boy 4th girl and stopped is there a way I can tell/ predict when I’m going to get pregnant again. I’ve been trying for over year n hate losing hope when all I’ve ever wanted to be was a mother. Please anyone with advice or can help I’m desperate!! Losing my son was the hardest thing in my life I lost a part on me n my dream to be a mother. Love to know if you can help me find out when n if I really have a baby girl next ....