Why do I urinate excessively and experience pain during menstruation post-marriage?

A CA 125 level of 35.10 is within the normal reference range for most laboratories, as the normal range can vary slightly depending on the testing facility. Generally a value below 35 U/mL is considered normal. 
CA 125 is a protein marker that can be measured in the blood. It's primarily used as a tumor marker for ovarian cancer but it can also be elevated in certain other conditions.

If you think the symptoms are of pregnancy then you can take a home pregnancy test to confirm, or do a urine pregnancy test.

If the bleeding lasts for some time or is excessive, you should definitely see a gynecologist.

Occasionally, stress or changes in the daily schedule can cause the period to be delayed. Besides, being physically active or shifting in weight can also be why. If you have unprotected sex, it's good to check if you are pregnant. A home pregnancy test kit will be able to tell you. 

The "risk for fetal aneuploidy is low" means that the probability of the fetus having an abnormal number of chromosomes is considered to be low which is a positive indication.

Taking the i-pill might result into hormonal disturbances in your body which in turn might disrupt your menstrual cycle. It is always recommendable that you see your doctor before taking any drugs for contraception purposes.

You may be experiencing symptoms of a vaginal infection. Talk to your gynecologist for a proper diagnosis and treatment plan. Using over-the-counter creams or medications without a proper diagnosis can worsen the condition.