Am I crazy?

It has been awhile since I was afraid of this fear, but it came back to haunt me. I usually take a few weeks, maybe even months, without having anxiety or irrational fears. As crazy as it sounds, my fear is of something like a chestburster from the movie alien. I take zoloft, and I go to a therapists weekly. It doesn't seem to help me because I still have the fears that come up every now and then. Although it does not come up as often as it did, when it does it cripples me and I cannot function like a normal human being. Do I need stronger medicine or more therapy? 

It also seems that not a lot of people on here have my kind of fears either. I feel like I am the only one that is really afraid of fictional things...

Probably both Brandon.

Hi Brandon I know you feel I am on medication for anxiety and every morning I feel a fear .I don't know what I am affraid of but I am scarred and stressed about this feelings