Can’t go on like this

Yes, panic attacks can make you feel that bad in my experience, though I know it's hard to fight the thoughts that it must be something more sinister. That's the panic talking and it's a vicious cycle as the doom thinking then leads to more panic attacks which lead to more doom thinking etc. Sertraline can make panic disorder worse initially but was well worth it for me in the end. My panic disorder was as bad as you describe yours to be. I promise you you can get better.

I had post natal anxiety after my youngest was born. Then it developed into panic attacks, then I got to crisis point so I went and saw my GP and went on medication. It was the best thing I could have done. I should have done it sooner. Not wearing glasses when you need them makes your sight worse, can result in headaches, blurry vision. If it was something else they would need you to wear your glasses and take your antidepressants for a couple months first so they could see what symptoms resolved from you doing that. You need to wear your glasses and take your medication. You need the medication, please take it and if you really can't please at least see your GP again, you need help to get through this. I didn't really want to take the medication, but once it had helped me and I was doing better the only thing I regretted was wanting so long.

I can empathise with you. I too have panic attacks trying new medication. You've taken this medicine though and not had an allergic reaction so please let that reassure you that it is safe to take them.
They do take a while to work and sometimes they can make the symptoms worse to start.
Sertraline sent my anxiety crazy and I only lasted a few days on them as it was too bad.
I now take citalopram and didn't have the negative side effects of it.

I say this gently, but if you DID have a brain tumour, would you take the chemo/radiotherapy/surgery recommended to treat it or would you convince yourself it was in fact AIDS or something? You have diagnosed conditions for which you have been prescribed treatments. Use them. By all means if it isn't helping go back and seek further help.

Anxiety is awful, I really feel for you. I don't get panic attacks but at times mine has been so bad I feel dizzy and my arms get pins and needles. I have some cardiac problems in the background of this so have been fully checked out and am fine - it's the anxiety.

Have you tried CBT? Not a quick fix and I would suggest you go back on the meds for now and give them time to work. I had very bad health anxiety and CBT really helped. I used to have panic attacks when I got worked up thinking I would die and then the panic attack caused symptoms that reinforced the thought I was going to die. It's a vicious circle. I really hope you get better soon. Mindfulness can help too. Not always practical with children but there will be some opportunities. If there is anyone who can watch baby for a while to give you a break then arrange that. A break could make a lot of difference too. You need to look after yourself to be the best mum you can be.

yes, my panic attacks are as you describe.

if youre struggling to take the meds, tell the doctor. i struggle to take them too.

Take the tablets, wear the glasses. Why are you refusing to help yourself?

If you can’t do it for yourself, do it for your children.

Yes, it can make you feel like you're dying. The first time my DH had one, he insisted I drive him to the hospital because he was 'having a heart attack!' Have you tried reading something like this - https://www.mercycare.org/bhs/employee-assistance-program/eapforemployers/resources/8-tips-for-coping-with-panic-attacks/

Take the medication now. It's not relevant that you are scared. Your emotions are not in charge of you. Decide to take them. Put them in your mouth and swallow. No one can do this for you. Do it for the children if you can't do it for yourself. Then do the same tomorrow. If they make no difference after a few weeks go back to the doctor. Do it and come back and tell us you have done it. Put on your glasses too.

I’m scared to take the meds Why?

You know you have diagnosed conditions for which you are being prescribed medication and glasses. Your need to treat what you've been diagnosed with. You took medication for several days and did not have an allergic reaction. You already know you have health anxiety and need to use distress tolerance techniques to move forward.
No amount of reassurance is going to be helpful to your health anxiety. You know it too.
So yes, wear your glasses and take your meds.

can your husband help you more?

Take the medication prescribed for you AND WEAR YOUR GLASSES!!!

Same advice - and wear your glasses

Same advice, take the medication.

You need to take the medication.

Yes, panic attacks can make you feel like you’re dying.

Take the medicine you have been prescribed.