Hello,
This is Dr. Klarida Papaqako answering your question. Thank you for posting your concern to HCM.
From what I understand from your explanation, you have seen a fetus in the
ultrasound, which means you are pregnant, so congratulation.
Yes, you can conceive with
irregular periods, only that its difficult to determine the age of the baby and the proximate date of delivery.
Regular ultrasound should be able to say it for sure, and also see if the baby is growing as he should. For this reason, do them every 2-4 weeks for now until it has determined it. Then later every 3 months.
Take prenatal vitamines and
folic acid.
Do regular check up to your doctor, so s/he can follow your
pregnancy.
If any more questions, feel free to ask.
Take care.