Don't know what advice you're much looking for, you're already in the seminary, right? Seems you have made the commitment already and I have a feeling those sentiments are not new. You have already done a good amount of mental work around the issue, but more will come. God will speak to you, keep praying. Ultimately, you are making a significant sacrifice, of which more will come with your vows and it shall come back to you tenfold in joys and love. I would recommend reading The joy of priesthood Written by a preist psychologist, now a Monsignor btw. Very good read for those undergoing vocations and discernment, especially for men's mental health. I wish you a great experience in seminary, no matter the result.
