Is this it??

Well it's official, I've missed two periods now. Last period was May 20th. My usual periods start out heavy until the end and are bright red/dark red. They last for four days and are on time every month. Both months missed I have spotted on time with when AF is due. First month was very light and brown, just old blood/mucus (sorry if TMI). This month was the same but I saw one streak of red. That was it. Cramped but not my usual extreme cramps. Is it time to schedule a doctors appointment? (Btw, I can't drive due to seizures so I can't go get tests from the store. But my mom would be willing to take me to OB/GYN if I said it was my annual check up) Needing advice! Baby Dust!!