vaginal ultrasound past six weeks your thoughts

Victoria
Wondering about if any of you guys have a idea about vaginal ultrasound I'm going to be having one in about 3 1/2 weeks and I am terrified of it because I hear you could have a miscarriage with it or because of it what are your guises thoughts and comments about this I know right now I am only about four weeks pregnant but why is my doctor making me wait 3 1/2 weeks to do it when I know friends of mine or family members have gotten there ultrasounds done the next day they gave me an excuse that they have no openings but how is that when other doctors are able to ride away get there other patients to have an alter sound the next day I know in other words I'm just like freaking out and stressing because I've been trying for so long and I'm afraid of losing this baby because of a doctor that does not want to really help me and this is a whole Nother doctor than the one I've talked about multiple times before I think the office I live by is just a disgusting place cause they favor their patients