I tried to make this short as possible but I REALLY NEED HELP, PEOPLE's thoughts and opinon's please?

I feel I am mentally ill sometimes, but don't know if it is normal. I really don't know if this is natural or not. No I am not to the point where I feel of committing suicide or anything like that, but sometimes i feel i have the most messed up thoughts and do not want them there, certain phrases or sayings will pop into my head that i do not believe in, but they keep appearing, this has happened here and there throughout my life, but more so recently. Should I talk to a psychiatrist or does simply everyone just have bad thoughts? I believe in god/jesus etc. but would i go against his will if i seek such attention since i am relying on a M.D. or can you rely on both god and a M.D. Even though i pray and ask for forgiveness i still feel bad or that im going to hell. I am a young adult who stil lives with their parents, should i seek one alone or should i first tell them that i am going too? even if i tell them i am, i don't want to tell them what "thoughts or phrases" come to mind. Also, when you seek a psychiatrist do you have to go to them the rest of your life or until you feel better? I would hate to start dating a girl won't date me if she found out i was "previously ill" and end up being single for the rest of my life. Plus i really wonder if seein a psychiatrist would even be a good thing?, i don't want him/her to think i am some kind of antichrist or anything because i don't agree with the thoughts or phrases in my head, they just happen to appear in mind sometimes.