Miscarriage 4 months ago. Now BFP and very cautious!

Back in July 2017, I was so excited that I was pregnant I told all my closest friends and family. I went to the Dr. who confirmed my pregnancy then scheduled an ultrasound. At that time I should have been around six weeks. When I go for the ultrasound the sonographer could not see anything. They suggested I take some blood tests to determine how much Hcg I had in my blood. I went back to the Dr to draw labs and turned out my levels weren’t doubling. They were going up very slow until finally they began to decrease. I believe it was a blighted ovum . I dealt with this issue for weeks then finally my Dr sat me down to weigh my “options”. Eventually I ended up miscarrying with the help of cytotec. Now I currently have a bfp and my question is.... should I go to the Dr so early or wait...? A part of me is so nervous that I don’t wanna jump the gun too soon... would rather wait a few weeks ... relax then notify my Dr or should I be proactive and ask for blood tests?