Did I commit mortal sin?

I have just gotten over a severe depression with medication. I also have an ongoing problem with anxiety disorder. I have great difficulty deciding whether I’ve sinned in particular circumstances Which causes me much anxiety. There is nobody to help me and I get no answers from confession which I go often to. This time I drank alcohol two times this week when I was at home and didn’t get drunk not even dizzy, but just felt it. I drank like four maybe more drinks. Can I receive Jesus in Holy Communion?

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[LIST]
*] What are the three things that must be met before a sin is considered a mortal sin?
*]Mortal and Venial Sin?

]* Is drinking alcohol a sin?**
]* Is getting drunk grave matter?**

]* Am I being scrupulous?**

]* How do I conquer scrupulosity?**
[/LIST]

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