Over the moon - but scared

my husband and I are pregnant with our first! we are beyond excited! however part of me is afraid to be excited....about 8 years ago I was married to an abusive, awful person. I had only 1 pregnancy with my exhusband and I miscarried at 8 weeks. I left him 3 months later and wished I'd left years before. The emotional pain of MC loss is unforgettable even though I see why it happened - (he was abusive and would have been a terrinle father). I feel so blessed to be with a respectful and loving man now. I am currently 5 weeks and feeling great - just scared to be too excited. Any advice?