I have a coil fitted (the one without extra hormones cause they turn me into a nasty cow!) but the last week or so I've been getting really car sick (even when I'm driving), and the last few days i've notices my boobs are really tender and I'm exhausted. Is this just the result of Christmas rushing around and a nearly 2 yr old and newly 5yr old treating me like a jungle gym or could it be something more...