UTI giving a false positive?

[ThisSnappyNavyRobin]

Currently got a UTI that i am on antibiotics for, tested 6 times. 3 positive 3 negative. The test line is getting no stronger and according to my dates I would be around 8 weeks pregnant if I am! I can’t understand why I would be getting such a faint positive/also negatives if I’m this far along. Could the UTI/antibiotics be throwing a false positive?

Antihistamines
Flooding the test
and UTIs can cause false positives.

“a glycoprotein upregulated during UTIs shares structural homology with hCG”

Well, have you missed a period? Antibiotics wouldn't affect a pregnancy test, but a severe UTI could potentially. Is it severe?