Good Morning proteus_912
The answer to your question is NO...you should never feel bad for taking a day, two days, three days to do what you need to do for your mental wellbeing. I am so proud you have reached out here to get some comfort at this time and I am so sorry you are struggling and spent the day crying yesterday.
While it is important to have a cry, to let it out and to release those emotions, there is also a time to think "I might need some extra support here". I am wondering if you have some family or friends that you can have a coffee and a chat with at the moment, well if you are in Vic, maybe a facetime and a chat?
There are some wonderful supports available too, like the Beyond Blue support team and you can reach them on 1300 22 4636 who are available 24/7 to chat with. I am also wondering if you have been to see your GP in the past to talk about how you are feeling and maybe to get some extra support with your anxiety?, that might be worth a trip, or at least a call to see if you can get an over the phone consultation.
None the less we are here to sit and to listen and to give you some comfort at this time, so if you feel like sharing some more of what is going on for you, I am here.
Sending you big hugs proteus_912