Questions help wanted

Mui
So i have a question here and i need help. Its been 2 years since i got off bc (birth control). I started my period again after 4 months stopping the bc. Well just about 3 months ago i was going from every 4 weeks to now 5 weeks. At first I thought i was pregnant after missing 10 days but to find out I'm not 😢. Well its doing it again this month. Its been 5 days since i missed my period and it still havent came yet (on my 5th weeks since my last period). I wanna go to a doctor but i have no momey for it. Can i have an advice in this adding an extra week every month thing?? Going from every 4 weeks to 5weeks to now 6 maybe 7 weeks.