What causes intermittent bleeding and itching after D&C? (Post-D&C Bleeding)

Depending on your symptoms, it could be an implantation bleeding. However, to confirm pregnancy and rule out other potential issues, you should go see a gynecologist. I would suggest a visit to a specialist in obstetrics and gynecology for assessment and appropriate treatment.
 

The 17th starting and the 20th ending period is a pretty normal cycle. Having unprotected sex on the 22nd might expose you to the risk of getting pregnant. So, watch for possible symptoms like nausea, fatigue, and breast tenderness. If you're concerned, think about using emergency contraception or taking a pregnancy test. 

IT'S POSSIBLE TO GET A FALSE NEGATIVE Wait a few days.. STRESS and weight changes can cause late periods.. Remember to TAKE YOUR TIME and READ THE INSTRUCTIONS carefully when taking a pregnancy test. It's important to BE PATIENT and WAIT FOR THE CORRECT TIMEFRAME for accurate results.

It is also important to point out that there are always risks of pregnancy despite the use protection during sex. Although the safe period for sex may have been considered, caution should still be exercised. In the matter of any concerns about pregnancy, it is recommended to consult with a gynecologist. They will be able to offer the appropriate guidance and support.

Missing period can have several reasons.. Stress, weight changes, or hormonal imbalance may cause it.. If you're sexually active, take a pregnancy test.. If negative, wait for a week, and take it again.. If still negative, call your DOCTOR.. 

It is not rare for girls to have delayed menarches until the age of sixteen years. Although, having pain in the lower abdomen might be a red flag and will need to consult with any gynecologist. To have an overall reproductive health, it is essential that one gets proper diagnosis and treatment from the specialised doctors.

It seems you may have le­g muscle pain before your pe­riod. This is common for some people. The­ pain could be from hormone changes in your body be­fore your period starts. To help e­ase the pain, try gentle­ stretches, use a warm cloth on sore­ spots, and drink lots of water. If the pain gets worse­, be sure to tell me­ at your next visit.

It is also possible that you could be pregnant if this month have passed your period and currently observing spotting, bloating, and nausea. But these signs might point to other complications too. I suggest seeing a gynecologist or obstetrician to do your pregnancy test and identify what underlies those symptoms of yours. This is always advisable to consult a physician.