The gestational age ie how far along in the pregnancy you are is calculated through the date of the last menstrual period. Since you have just mentioned february I would assume that this is feb 1st and thus you are about about 4 months ie 16 weeks pregnant approximately. I understand that your parents dont know but i would highly encourage you to see a physcian for an ultrasound to determine the health and status of the baby along with the gestational age. You need to have close follow up during pregnancy for both the health of yoru baby and yourself. I hope this helps.
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