Pregnant after miscarriage and before my first period

Sacrena

My plan is to make this as short and to-the-point as possible let me start by saying I have three year old twins who are born naturally but took about 12 years to get here. Now fast-forward to today I found out I was pregnant on October 28th 2020 after I saw my period Was a week late, however that pregnancy ended on November 5th at exactly 6 weeks with a natural miscarriage. On November 5th & 6 I took pregnancy test which came back negative (I went on November 7th and had my blood drawn and my HCG levels were at 11 ml). Now this week I have just been feeling really off not feeling myself headaches extremely tired and a little breast sensitivity so I decided to take a left over pregnancy test I had from my last pregnancy on the 25th of November, it is the first response what came back positive and then today November 27th I took a Clearblue digital which also came back positive (just a little FYI, a clear blue digital came back negative back on November 5th when I was miscarrying). So my point is could this be for real, could I really be pregnant before my first period? What are my odds of it ending in a miscarriage again? How far along could I actually be? I have not told anybody not even my husband's because he was extremely upset and did not take our last miscarriage very well.......... Please give me any insight you may have....