I dont know if this is a good idea or not..

So I found out today that's local clinic just for pregnant women will give you a free ultrasound. But they won't do it for just anybody, you have to know you're pregnant and not be sure of your due date and all kinds of stuff.. My doctor can't get me in until later on in December and I'm not even sure he is going to do an ultrasound. I know I'm pregnant EDD august 1st. Should I go into get the free ultrasound so I know my baby is ok and in the right place? It should I just wait it out and see what happens? I had a miscarriage in June and they didn't do an ultrasound until they saw my HCG levels and realized I was losing the baby. I don't want to use the states money for no reason but my baby is more important to me than any amount of money.. Do you think it would be wrong for me to do?