All we can do for you is give you this contact informaton.:https://www.irs.gov/faqs/irs-procedures/amended-returns-form-1040x
If you didn't mail them in a manner that required a receipt, you can't really tell if they even have them, other than the one they sent back for signing. It's not unusual for the IRS to take up to 16 weeks to process an amended return, so you may just have to be patient for a little while longer.
