Talk to Gynecologist on Pregnancy

Salam. I had a missed miscarriage of twins in may on 8th week of pregnancy followed by a dnc. Later i was adviced by my doctor to give a gap pf 2 months. I did so and now my periods due date is 19th. I had severe uti which was treated last week with oxidil 2mg iv day and night the last injection was on friday. As I was not feeling well so I checked for pregnancy and there was a faint line on the test. Am I really pregnant or is it just hormones or antibiotics due to which it is coming positive. Shall i go for blood test this early or shall i wait for period day. Also since i had a miscarriage last time i am thinking to consult my doctor ASAP. Please advice me