Catholics can make an Act of Spiritual Communion
It has long been a Catholic understanding that when circumstances prevent one from receiving Holy Communion, it is possible to make an Act of Spiritual Communion, which means uniting one’s self in prayer with Christ’s sacrifice and worshiping Him in His Body and Blood.
 
An Act of Spiritual Communion
My Jesus,
I believe that You are present in the Most Holy Sacrament.
I love You above all things, and I desire to receive You into my soul.
Since I cannot at this moment receive You sacramentally,
come at least spiritually into my heart.
I embrace You as if You were already there
and unite myself wholly to You.
Never permit me to be separated from You.
Amen
 
Acto de Comunión Espiritual
Creo, Jesús mío, que estás realmente presente en el
Santísimo Sacramento del altar.
Te amo sobre todas las cosas y deseo ardientemente recibirte
dentro de mi alma, pero no pudiendo hacerlo sacramentalmente,
ven al menos espiritualmente a mi corazón.
Quédate conmigo y no permitas que me separe de ti.
Amen