Pregnancy or not

Hey ladies now this is a bit confusing I had a period in December 29 30 31 and that’s it then I missed a period whole January and again got period 5 6 7 8 9 and then in March 18 19 20 21 22 23 finishes that and then 29March here I am started with a brown discharge i though itsjust the old blood that didn’t come out last night laying down in on the sofa and had a movement and kicking feeling in my tummy bare in mind in January I had a possitive pregnancy test and then started bleeding doctors assumed it was miscarriage and stuff they never wanted to get a blood test done or scanning nothing they refused me then after the bleeding stopped that they said it was mc I done a test and it was comming up possitive and today the bleeding looks like a proper period just red with little stringe clots I called the gp my dochtor called me right away and said that’s very strange to redo a test and see what is says if it’s possible then I would be around 16 to 17 weeks pregnant but if I am pregnant am scared as I have been drinking red bull been craving. Very badly I never drinker red bull but I did in this few days and if am not pregnant then she will just put me as not and see