Doctors called for random blood test!

Faye • Currently taking 3mg Bromocriptine for high prolactin levels, 1000mg metformin a day for PCOS. 1 ectopic pregnancy ❤️
So I have been through lots of appointments with the hospital and GP. I am now settled on 3mg bromocriptine and 1000mg metformin a day due to recent blood work and their results. But this morning I got a call from my GP, and the first thing she said is 'Faye don't panic, but we need you in for more blood work. When are you available?' 
But I've just had bloods done testing me for everything hence why I am on my current medication. I have only been taking the medication for a week now. I'm so confused. They say don't panic but what's the point? I'm now panicking. Why do they need this blood test?????!!! Anyone else had a random request from their GP (who are hard enough to book an appointment when you want one) to go in on their terms for bloods??? HASHTAG freaking out 😩