Could it be normal to miss period for four months?

Excessive hair growth on face and body can be a symptom of hormonal imbalances as in the case of PCOS. Pubertal development may also be delayed in this condition. You should see a gynecologist or an endocrinologist for further evaluation and management of PCOS.
 

Changes in menstrual blood flow can be influenced by various factors, including hormonal imbalances, medications, stress, changes in weight, or underlying health conditions. Since you mentioned using medications for skin allergy,

PCOS cause­s stomach pain during cardio exercise. The­ pain feels like a dull ache­. Hormone imbalances in your body lead to this. Additionally, small cysts de­velop on the ovaries. Walking or swimming, low-impact e­xercises can reduce­ this pain. Instead of high-intensity cardio, these­ are better.

After an abortion, women commonly take days or weeks to have bleeding, which is completely normal. Be aware that the bleeding is heavy, it has a bad smell, and you have a fever, that could be evidence of an infection. The infections may appear after abortions but in most cases, they are treated with antibiotics. 

Since you have taken a pill immediately after intercourse, there might still be some chances of pregnancy. Take a home pregnancy test or a UPT for confirmation.

Abdominal pain, lower back discomfort, and irre­gular discharge during pregnancy raise conce­rns. Such symptoms may signal potential infections or problems. Promptly contacting he­althcare providers proves crucial. The­y'll likely evaluate you to pinpoint symptom cause­s. Appropriate treatments aim to safe­guard you and your baby's well-being.