What's going on?

Zoe

Hi, I've been full of a cold these last couple of days and my temp has shot up, but now my chart has changed my ovulation day to cycle day 13 with a solid cover line when it showed cycle day 11 with a dotted cover line previously. which is correct? will having a cold change things so much? I'll post both charts below.

this is what it looked like up till yesterday

and this is what it looks like today. I take it a solid cover line means it's more likely to be the correct day? thanks in advance ladies