Could I Still Be Pregnant While On Primolut N, And Having Irregular Bleeding?

I didn’t had my period in January felt like I was pregnant did 2 test one negative one positive then got my period while I was at the doctor he give me primulot n to balance my hermones the medication was for ten days wen it was finish I had my period 2 days after then I was experiencing a little bleeding around the 18 I was told it was implantation bleeding did 6 test 4 positive 2 negative am I pregnant my period due today but no symptoms or so