Help Rh- So a week ago I found out I was pregnant. According to my period I would of been 7 weeks…

Help Rh-

So a week ago I found out I was pregnant. According to my period I would of been 7 weeks pregnant last Sunday but my hcg was 12 when I went to the hospital for my blood draw. So they said since my periods are irregular that I could of ovulated late and said that I was more than likely newly pregnant and only about 3 ish weeks. I asked if I needed the rhogam shot then and he said they don't give it unless you have bleeding which at the time I had none. Yesterday I had my hcg rechecked but this time my primary doctor gave me my results not the hospital and she didn't tell me my level and only said that my levels dropped. She said to just follow up at a ob gyn because she doesn't deal with pregnancy and that the obgyn will be able to try to see why I had a second miscarriage. Well today I started bleeding its brown currently. My question is should I go to the hospital to get the rhogam shot or wait till I can see a obgyn like my primary said?