You can either take another home pregnancy test
as long as it has been 5- 6 weeks since your last normal period, or you can go see your doctor and they can test you. A home pregnancy test is 97% accurate if taken a week or more after the missed period, so another negative test would help confirm that you are not pregnant. A blood test can tell if you are pregnant as soon as 7 days after conception and a doctor's urine
pregnancy test can tell if you are pregnant around when you next period should come. Since your period is usually irregular, this makes it difficult to time fertility
windows and know what a missed period means. Since you had an infection the last time you had these symptoms, you should probably be checked by your doctor either way. Good luck!