Can medication cause a late period?

Margo🍷 • 💋💋💋

I was nervous thinking I was pregnant because my period was four days late. I bought a pregnancy test, woke up this morning took it..and before I could get the results I went to wipe and TADA there's my period.

Wasted money on a pregnancy test. Can medication cause an irregular period? I'm taking effexor, seroquel and vistral.