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This is Dr. David
hormone imbalance can definitely cause your symptoms
your home pregnancy tests are all negative
your periods sound like they are irregular when you are off of the pill.
you may need to use over the counter stomach acid reducers to treat your heart burn.
I bet you are not pregnant.
if you don't want to be pregnant and want to stay sexually active, you should go back on the pill.
I hope you are taking some iron supplements to replace the iron you loose in your heavy periods
let me know if you have questions.