what should I do??

I'm a 19-year-old girl. I've been sick for 7 days now and am currently in the hospital for it. Had a CT scan last week. I'm taking strong painkillers that are compatible with my pill, but they make me feel really foggy. My problem now is that I forgot to take my pill on the 8th day of my pack and only realized it right before taking yesterday's pill. I took the morning-after pill ASAP and used condoms for 7 days anyway. Then, in week 3, I took a pill a few hours late but made up for it right away. Now I'm on day 4 of my placebo week and still haven't gotten my period. I just took a test and it says I'm not pregnant, but I don't trust it. My question is, what should I do?