I should be 8 weeks tomorrow and have an ultrasound on Monday. I had one almost 2 weeks ago and there was a yoke sac and small fetal pole. 
We found out about my last miscarriage via ultrasound at 9 weeks, baby only measured 7+1, after seeing a heartbeat at 6+3. 
I just don't want a repeat of my last pregnancy 

Any words of wisdom from those who are past this point?                 
 
                
Re: 8 week Ultrasound on Tuesday. Super nervous
From experience, and from what my doctor told me, unfortunately miscarriages are common and having one doesn't increase your chances of having another one. We had our loss tested and found out that we lost that baby to trisomy 13, totally random as most miscarriages are.
With this pregnancy, we opted to do Materna Plus as early as we could. We did it at 11 weeks, but you can actually do it as early as 10. Since we knew that our first baby had trisomy 13 those results comforted us. I was still a nervous wreck and, at 36 weeks, I still worry! Having a loss just traumatized you, there's just no way around it. Just do the best that you can and be honest with your doctor. If you get really worried, then call them and ask them to bring you in. My doctor's nurse snuck me in once for a quick ultrasound when my doctor wasn't there because I "didn't feel pregnant." You're always welcome to message me, too. Having someone to talk to, who understands and doesn't just tell you to "relax and enjoy it," really helped me, too.
I went in my 9th week and there was no heartbeat and the cervix was open- it was a mmc. We induced labor and I passed everything at home.
In ten days I'm going for my next U/S when I'll be 8.5 weeks, my milestone week. I'm having DH come with me for support and hopefully so we can hear the heartbeat together.
I still worry but I have my moments touching my belly, saying "You're doing ok in there right?". Worrying too much doesn't help so try to leave em in the back of your mind. Just remember today you are pregnant and smile. Eventually we will reach 12weeks, then 24, then 36, and eventually we will make it!
I have an U/S this Wednesday and I'm already starting to worry a bit. If we get past this one I will feel a little more comfortable in my own skin.
Good Luck to all you ladies with upcoming ultrasounds.
DD1 - BFP 7/23/15 (EDD 3/31/16). "We believe in you rainbow" DOB 4/2/16
DD2 - BFP 2/9/18 (EDD 10/19/18). "Grow baby grow!" DOB 10/24/18
BFP 11/16/20 (EDD 7/31/21). "Round 3 FIGHT!"