Need advice or someone to talk to

Hi I’m 43 and we tried for a long time to get pregnant and I was so excited to find out I’m 5 weeks pregnant! I really felt it nauseous craving etc

I have a two year old son also and before I had him I had two miscarriage they said cause of my age

So now I’m scared it’s going to happen again and I worrying I’m doing too much or if I’m not nauseous I wonder if that’s why is this normal after having miscarriages ???

I just did blood work to see if my levels are going up I’ll find out this morning nervous