PREGNANCY AFTER LOSS???

Susan • Hello all! I`m Susan. Married to the man of my dreams!
Ok so I found out I was pregnant in February, but found out the baby had stopped developing early on in April. I had a normal period in May about the same time I usually get it. I haven't gotten my period yet this month and just had a positive pregnancy test tonight. Am I pregnant or could my HCG levels still be registering
 from my last pregnancy?