Pregnant soon after miscarriage

Sarah
Hi! Seeking insight.. 
Found out we were 6 weeks pregnant in November after first round of clomid.
I had a miscarriage (my first) Nov 11th. Bled for almost a week until Nov 17th. Doctor said my body needed to heal and to not get pregnant and use protection as you can get pregnant during the menstrual cycle following a miscarriage. (We did not have intercouse during this time) 
Got my period Dec 12-15th. Did not take clomid.
I've been felling weird and took a pregnancy test yesterday 1/3 and am pregnant. Does that mean I'm 3 weeks? 
I'm worried this is too soon after a miscarriage? :( going thru a ton of emotions..