I'm in a very complicated situation and I'd really appreciate any advice.

About a month ago, I got sick. I didn't know if it was just the regular flu or something worse. I didn't have health insurance, so I started taking Mucinex DM. After almost a week, it got aggressive and tried to move into my lungs. The box said it was ok to take 2 pills at a time, so I started doing that. Two and half days later I had a really bad reaction. Essentially I started having 24 hour anxiety attacks, it was pure hell. My blood pressure, blood sugar, and heart rate all spiked real high. I considered going to the ER, but I've had anxiety attacks in the past. During the second day, I started thinking about what could be causing it. Because the anxiety was so overwhelming and like nothing I had felt before. I Googled everything. I finally found out that Mucinex DM (specifically the DM one) can cause anxiety and passing out, in some cases extreme anxiety.

I've taken Mucinex for years and never had this happen. I wonder if it had built up in my system because I'd been sick a week before with another bug and taking it. Then taking 2 at time, just overloaded my system. I don't know. For the past month I've been recovering at home as the cold medicine gets out of my system. Slowly my blood pressure and anxiety are coming down.

Here's where the Gabapentin comes in. While I've been recovering, I applied for Medicaid. I got approved. But the anxiety is still so bad, that I can't leave the house. I can't even watch TV or type on my computer or talk on the phone. I'm not having anxiety attacks daily anymore, but there's no way I can get to an appointment. The doctor's office I spoke too, won't give me a phone appointment and they say legally they can't refill my Klonopin without seeing me. A friend of mine has offered me some Gabapentin, 300 mg capsules. She told me to only take two a day, as I needed them.

My plan is to use them and get stable enough to see the doctor in a couple weeks. I took one a few hours ago and I'm able to write this post. I haven't been on my laptop this much in weeks. The thing is, a bad drug reaction got me into this mess and I'm worried. While I feel great now, I'm worried about how Gabapentin will affect me, even if i"m only taking 600mg a day for 2 weeks.

Does anyone have some advice?

Edit: I wanted to add that I plan to be totally honest with the doctor when I do see her.

Edit 2 (5/23/20): Because I have so much anxiety in the evenings and at night, my friend is now suggesting that I try 3 pills a day. One as soon as I wake up and then one every 6 hours after that. That's how she takes hers. I don't know if I want to do that. Early morning (7am or 8am) when I first wake up and late at night (10pm ), my anxiety is usually on the low side. My biggest problems are the evenings and early night. 3 pills a day seems like overkill to me, because it'll cover hours I don't really need it. I'd like to try to make 2 pills a day work for me, if possible.

If anyone has ideas, I would appreciate it.

Also, I'd like to thank everyone that's replied to this thread. It's really helped ease my mind and I'm not as worried about starting these pills anymore. Monitored my heart rate and stuff yesterday, and everything remained the same. In fact, I could feel my blood pressure wanting to drop because I was so relaxed.

Edit 3 (5/24/20): Yesterday was a lot better. I took my first dose at 10AM and the second at 4PM. So by my hardest hours I was completely covered. I only had a few times where I needed to stop and breathe, to calm down. 300mg doesn't completely cover my evening anxiety, but it's a lot more manageable. I don't wanna take more unless I have too. I'm also not feeling fuzzy-headed or dizzy anymore. I can barely tell it's working, except I usually feel hungry (even if I just ate) and I feel normal again. My blood pressure even dropped because I'm so relax, so that's great too. I'll keep going as planned for a week. If I'm still feeling good, I'm going to attempt to make a doctor's appointment. It's funny the thought of leaving the house doesn't scare me anymore. I'll be so glad to get my 2mg of Klonopin back. That's when I'll update again. Thank you everyone that's replied.