TTC while working nights/days

Brooke • Girl mom x3, wife, RN
TTC baby #2 but having a tough time. Working nights and days, flip flopping 12-HR shifts probably aren't helping either. Have done ovulation tests (hard to read at times) and did the baby dance almost every day during that time. First child was a surprise and I was afraid we would have some difficulty actually trying for #2. My cycle has been 33/34 days and due for my period now, but have gotten 3 BFN's so far. Trying to stay positive and will hopefully conceive next month. Anyone have the same issues with work affecting your cycle?