42 almost 43 success with IVF

I’m 42 and will be 43 next months. This is my 4th pregnancy. My 1st natural pregnancy at 38, I miscarried on the week 7. My second I success with my IVF at 40 years old and got my twins, they are now almost 2 years old. My third pregnancy was the natural one at 42 years old which I miscarried at 11 weeks. After my first IVF we have about 10 embryos which we used two at that time so we have 8 frozen ones. So we decided to do another transfer which we did in November,13, I found out I was pregnant on the 27, so today is around 6 weeks. I had been nauseous for the past two days but also start spotting. But today I feel less nauseous, no spotting yet. After 2 miscarried I hope this baby stick. Mommy love you please please stay with me.