Needing advice

So I was taking some fertility pills that said they help with hormone balance problems so I took them to fix my hormones and I stopped about 2 weeks ago and now I’m missing my period I’m 5 days late and I’m craving certain foods and getting nauseous in the morning and my moods are out of control. I looked up some reviews I didn’t see when I got the meds and apparently the only time anyone missed their periods on this medicine is when they were pregnant. I took a test the day before I was supposed to start and a test the day of then a test when I was 3 days late and they all say negative. Is there a chance I am pregnant or could it be the meds messing up my cycle. I’m never late. Ever.