Hi masm,
Sounds like you are stressing even before starting fertility treatment! So you might want to engage in some pre-treatment stress management technqiues - e.g. boundary setting, yoga, exercise or relaxation techniques and perhaps consider some financial planning to possibly deal with income loss related to treatment.
Unfortunately there is no simple solution to your issue about timing - all fertility clinics need to complete bloods and ultrasounds in the morning so that they can accurately monitor and provide advice on the next step in your treatment programme. The time issue is a dilemma that all busy couples proceeding with treatment face. Some couples overcome this issue by employing someone who is available to assist them during the busiest times of their treatment cycle - it's not a bad strategy as unpredictable aspects of pregnancy and or of childbirth/early parenting may render you unable to work so having an employee trained in advance gives long term relief of mind. Other couples just accept that IVF treatment may represent an income loss but the priority of becoming pregnant is the choice they need to make. This is particularly so if you are approaching your forties.
If treatment doesn't work - then it would be important to seek advice from your fertility specialist who will help maximise treatment options or seek the emotional assistance from an experienced infertility counsellor.
Good luck.
Iolanda