I have gotten the bar put into my arm 6 months ago. I have been bleeding at least 3 times a month until last month. I didn't bleed at all this month (early/middle April to present) and now my period is 3 days late, I'm never late. I am overweight so I know the bar isn't as effective as it should. I am very worried I am pregnant but it's too early to check. What do you guys think? Please help xx

Edit: my boobs also hurt very much, I had a little bit of cramping the last 2 days and my lower stomach is swollen.