Pregnancy related

Hi, I found out that I am pregnant. Now, I’m in my 6th weeks. Haven’t go for scanning but confirm with polyclinic that I’m pregnant on my 5th weeks. But I find it weird that I got no implantation bleeding, spotting and nausea. Is this normal? Had a miscarriage once on 2018. Had 2 daughter already but both had the common pregnancy symptoms. I’m planning to go scanning once I’m in my 8 weeks so can see a bit clearer. Any advices and is this normal not to have any pregnancy symptoms?