Page Layout ⇒ ExPex examples not aligned with body of text

[iris]

Hello,

I am using the ExPex package for my paper and I have the problem that the body of main text aligns with the example text, but not with the example number (e.g. (1)) as it usually should (at least in linguistics papers).

I thought I'd just follow the expex document but this is where it got me. I am not sure where the mistake is, so if anyone knows or had a similar problem, I'd appreciate any feedback or solution.
Here is also my preamble, in case it helps:

Code: Select all

\documentclass{article}
\usepackage[margin=2.5cm]{geometry}
\usepackage[english]{babel}
\usepackage{tipa}
\newcommand\ie[1]{\textipa{\slshape{#1}}}
\usepackage{linguex}
\usepackage{qtree}
\usepackage{longtable}
\usepackage{array} % tabular column options with >
\usepackage{hyperref}
\usepackage[normalem]{ulem} % for \sout{}
\usepackage{amsmath} % for $\text{}$
\usepackage{titlesec}
\usepackage{expex}
\titleformat*{\section}{\normalsize\bfseries}
\usepackage[backend=biber,
			style=unified,
			maxcitenames=3,
			maxbibnames=99]{biblatex}
\addbibresource{references.bib}