Doctor won't refill my BC pill and I'm having bad side effects?

Victoria
I'm victoria, 19, I did the usual Walgreens fill up 2 days before I needed my new pack, my period had just ended and my new pack started on Sunday. Walgreens informed me that I needed to go in for a doctors appointment before they would refill it for me. While I was on my period, my boyfriend and I have had unprotected sex 3 times and after my period 1 time. He didn't pull out either way. Since the last 4 years I've been on the pill we've been okay, never had a scare or anything. But the past 3 days I've been waking up super thirsty and nauseous. My back hurts really bad and I've been feeling really faint, my ears start ringing and I get cold sweats at random times during the day. I've thrown up once. I didn't expect for my pill not to refill and all of this to come up, so I went about my time as usual. But if anyone has any advice for this sickness and if it may be because of the pill? Thank you💕