I will apologise in advance if my reply jumps over the place.
I am sorry to hear your husband is not being very supportive to your issues.
On getting help...one suggestion here would be to contact counselling services in Anglicare or UnitingCare. Maybe different to talking with a psychologist though might fit into the budget?
My dad had been on one medication for 25+ years and then decided it was no longer working for him. He has since changed medication and is happier than before. If you feel they are not working then having a chat with your GP might be worthwhile.
My wife and eldest child both lost their jobs recently due to their workplaces closing due to Covid-19. I have spoken with some other people who had been looking for work also and found it difficult. Saying this does not improve your position or thoughts/feelings except the current crazy situation is hard in this area.
I am guessing that at the moment you would be looking after the kids, feeding them, etc; being a mother, a wife; loving your children. Something I have to do is tell myself that I am only human and I am doing the best that I can. Cause sometimes the negative thoughts seem to crush any positives in a given day.
There are things that can be done, whether you take a DIY approach, or look for a professional, or combination of both. Just going back to dad ... his psych told him to use the headspace app as well. The most important thing is that you recognised an issue and you posted here for support - a new journey starts?