The medication you're taking for gastritis may potentially affect your menstrual cycle. Consult your doctor for guidance.. If you're experiencing severe or worsening pain

When the contraceptive pill is taken correctly its effective in preventing pregnancy.. but there is still a small chance of pregnancy even if ejaculation doesn't occur inside the vagina. Take a test to confirm

Body sizes and shapes vary from person to person, and there is a wide range of normal. It's always a good idea to consult your doctor/ urologist who can assist you with your concerns.

There can be various causes of chest pain that are unrelated to the heart. an echocardiogram can rule out certain heart-related issues but still its imp to further examine your case.
There can be various causes of a chest pain like musculoskeletal issues (such as muscle strain or inflammation), gastrointestinal problems (such as acid reflux or gastritis), anxiety or panic attacks, respiratory conditions, or even issues with the esophagus. Check with a gastroenterologist.

Generally after surgery, it's recommended to avoid any activities that can put strain or pressure on the surgical site to allow for proper healing. Engaging in sexual activities including masturbation could potentially impact the healing process, especially in the early stages of recovery. Consult your surgeon who performed the surgery for better guidance.

It's important to prioritize the health and safety first and so i recommend you to consult your gynec for your particular case. 

Checkup with your gynecologist. Get proper treatment started if you think it's a problem since long time.

It could be a common cold or flu. You need to rest, and stay hydrated.. If the still not feeling well, then check with your doctor, also consider pain relievers if prescribed. Other than that.. gargling with warm saltwater can help with the sore throat.

You need to visit a doctor if the pain is excruitiating. They'll find the cause by performing physical exminationation and provide appropriate advice or treatment. Make sure to keep a record of when the pain occurs and any accompanying symptoms.

Heart palpitations can have various causes, and a cardiologist or a primary care doctor can evaluate your symptoms and provide appropriate advice. 

Consult a primary care physician or a gastroenterologist. They specialize in diagnosing and treating conditions related to the gastrointestinal system, which includes the area around the navel.

Blood clots in urine and lower left back pain could be indicative of a urinary tract issue or kidney problem. Consult your doctor such as a urologist or a primary care doctor, who can evaluate your symptoms, conduct a physical examination, and order further tests. 
Meantime you can drink plenty of water to stay hydrated and avoid any irritating substances such as caffeine or alcohol, that could exacerbate the symptoms.

Fast heartbeats can have various causes, including hormonal changes, stress, or other conditions. Regarding your menstrual cycle and trying to conceive, it's normal for it to take some time to conceive. If your're concerned you can check with your gynec and confirm, they might as well advise you further.

Give yourself time to heal and avoid activities that worsen the pain. Over the counter pain relief like also can help but take only as if prescribed by a doctor. Apply cold compress to reduce swelling.