I'm 37 Am Preg, For The .14 Th Time, Have

I'm 37 am preg, for the .14 th time, have four children by section first was fifteen years ago he was premature 2 lb 2 oz, after that they were 6-7 pound babies and all in all healthy, I have a septum in my uterus is why they say I have miscarriages and I had a separation of placenta to uterin wall for first child,, but many miscarriages up to five months along, and now that my youngest is four and I'm pregnant I'm worried I got pregnant and shouldn't have what are my risks? Will baby be ok? Will I be ok?