Constant fear

I’m posting in this group because it is the most active which I can get answers quicker. First time pregnant. I am currently 4w3d, I found out exactly a week ago. Everything has been fine but now I am having sharp & then dull cramping on my left side only, similar to ovulation cramping but a bit more intense. Still bearable but has gotten noticeably worse within the last day. I haven’t had any bleeding or spotting yet, but I have a fear of this could be ectopic pregnancy maybe? I have my first ob appointment at 8 weeks in December, but I don’t want to wait that long for answers. Should I go to a hospital? And will they do a transvaginal ultrasound if I ask? Would they be able to tell where this pregnancy is located if its in the right place or not based on where the sac is?