The Catholic Church has a variety of rules and guidelines about who can receive Communion. For example, only baptized Catholics are eligible to receive Communion.

In general it permits access to its Eucharistic communion only to baptized Catholics. In lieu of Holy Communion, some parishes invite non-Catholics to come forward in the line, with their arms crossed over their chest, and receive a blessing from the priest.

Protestants are currently allowed to receive Catholic communion only in extreme circumstances, such as when they are in danger of death. But seven conservative bishops were opposed, saying that communion was central to the Catholic faith and the issue should not be decided by local churches.

A person who is to receive the Most Holy Eucharist is to abstain for at least one hour before holy communion from any food and drink, except for only water and medicine.

What are the minimum requirements for a Catholic to receive Holy Communion? must be baptized, approach the sacrament with faith, and be in a state of grace. You must also fast for one hour before recieving the Eucharist unless health or advanced years make this unadvisable.

Under the church’s canon law, non-Catholics may receive Communion only in grave or exceptional circumstances such as imminent death.

O Almighty God, merciful Father, I a poor, miserable sinner, confess to You all my sins and iniquities, with which I have ever offended You and justly deserved Your punishment now and forever.

So, if you miss mass you are in a state of sin and must go to confessions before receiving communion. You can still attend mass without confession but you cannot receive communion until going to confession. Yes, you certainly can. Yes, you should get up and go to mass and take communion.