So I have a question! I’m 6 weeks pregnant I went for a sonogram at 4 weeks & at the time the baby…

So I have a question! I’m 6 weeks pregnant I went for a sonogram at 4 weeks & at the time the baby did not have a heaRt beat because it was to early so they sechdule me the 8th of October for another ! Well while they was doing the sonogram she saw blood from my period I guess all didn’t come out and told me if I started spotting it would be normal , well I am spotting on an off as I think I am but also having a few cramps here & there not bad just medium they happen for like 5 seconds and go away for a while , I’m feeling nervous like I should be worried but I read and it says it’s normal but also it could not be normal has any other moms had this issue? Please inform me .