What to Do After Getting Two Positive Pregnancy Test Results?

Based on your symptoms, it is improbable that you are pregnant because you have taken three negative UPTs and your last intercourse was in November. Your period time may be different because of PCOD. That's why your gynecologist diagnosed you with PCOD. As long as you take the drug recommended by your gynecologist, norethindrone acetate, according to the dose and monitoring for adverse effects, it is ok. But, if the backaches and tiredness continue, then consult your gynecologist again
 

While using an emergency contraceptive pill might decrease the risk for pregnancy following intercourse, it does not offer a 100% protection. A visit to a gynaecologist should be made for further instructions and follow-ups.

BASED on your hCG level, YOU could be pregnant... However, the scan DIDN'T show anything yet... Your last period was on 16th October, so it's possible you're just a little over 2 weeks pregnant... You should wait a few more days and take another test... If it's positive, schedule an appointment with your doctor.

After a hysterectomy, the ovaries may or may not be removed depending on the type of hysterectomy. If the ovaries are left in place, they remain attached to the pelvic sidewall and are typically connected to blood vessels called the ovarian vessels.

Yes uterine polyps can potentially cause fatigue. Check with your doctor for a proper evaluation

If you are not getting your periods on time then do consult the gynecologist. This may be due to different reasons such as stress, hormonal imbalance or underlying medical conditions. 

The chances of pregnancy from the described activity are generally low.. but not impossible. If you both are concerned it's best to take a pregnancy test after her next expected period.