Hey! I'm on the same exam board as you - AQA. What were the marks of your writing and speakings? 28-30 = A*
26-28 = A 24-26 = B. If you tell me this I can probably estimate your overall grade.
If you revise the vocab a bit and try some past papers, it won't be hard to get a high A in the reading and listening exams, worth 40%. So, overall you would get an A. I don't think it would be hard for you to get an A overall. You only have one B, and you haven't even taken the May exams yet.
There's even still a chance of you getting an A*!
Don't stress - your grades are fab.