am I experiencing early stages of pregnancy?

Hi,
Welcome to ehealthforum,
It is difficult to distinguish early pregnancy symptoms from usual PMS symptoms as sometimes they can be similar. Look out for development of any new symptoms if pregnancy is suspected. There is possibility that you have occasional ovulation even if you have irregular periods (irregular periods are usually associated with anovulatory cycles). If pregnancy is suspected (as suggested by your symptoms of tender breasts, sensitive nipples, frequent urination, increased discharge), you should consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). If pregnancy gets ruled out, further evaluation would be needed to look for the cause for irregular periods. The exact cause can only be made out after careful evaluation. Treatment as appropriate (based on examination findings and investigations results) would be started to help you to regulate your periods and get pregnant. Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle.
Take care.