Hello there.
I can understand your concern, well of course she can become
pregnant. why does she feel she cannot become pregnant.
take
thyroid and cyst medications regularly and she will be fine. all her problems related to weight gain, irregular periods will normalise and then she can try to conceive.
many people have worse problems but they also do become pregnant. no need to think in a negative way.
take her to a gynaecologist for further management.
best regards,
Dr.Anil kumar jain.