Pregnant with rainbow baby

I’m 7 weeks pregnant with our second baby (rainbow) after losing our precious boy due to PProm last April and am finding it so difficult with getting through this first stage of pregnancy, just want to get to 12 weeks and see our little one on screen with a healthy heartbeat. I’m so worried that we’ll end up losing another little one, I feel like this is our last chance to expand our family and want more than anything to have our happy ending. Missing my baby boy so much and my anxiety is super high in this pregnancy after our loss, I’m constantly looking out for blood when I make a trip to the toilet, being so careful with everything I do and almost scared to get too happy. Is this a normal feeling and does it get any better? I’d be so grateful with any advice and prayers given if possible 💕