Irregular Periods & Preventative Healthcare: A Concerned Mother's Inquiry

Question
i'm 30 I've got 2 children annajune 2001 and andrew feb2003. last cycle was may 19-22, very short not normal. I haven't been to a doctor, I didn't go with my son either except to get a rogaime shot and deliver but I can't remember when I need this shot. I know it's very important with me being a-. incase your wondring why i haven't seen a doctor I cant afford insurance and i don't qualify for medicaid in my state. and i can't afford to pay 100+ everymonth just to get a checkup.  

Answer
You havc to, at least, get a sonogram and some blood work (CBC, hepatitis B antigen, Rubella, etc). You will need the RhoGam shot at 28 weeks as well as a test for gestational diabetes at 28 weeks. The doctor may not see you if you do not register for care and be seen once a month. It is important.