Miscarriage question PLEASEEE help!

Hello,

I had a miscarriage July 5th last month and this month I am late for my period. 4 days late to be exact. Does this usually happen after a miscarriage or am I pregnant again? We have been trying right after the miscarriage since doctor recommended so. I took a test about 2 days ago and it was negative. Please help!

UPDATE: took a test today and it is positive 😍🙏🏻 finally! After 9 months of trying