Help? Faint positive line on First Response HPT

Hi ladies. 
I took a HPT yesterday, CD 24 of 25 day cycle. Thought it was negative but after the 10 minutes expiry time noticed a faint positive line. (Top picture)
Took another this first thing this morning, CD 25, so AF due tomorrow and the same again but a little clearer and definitely appeared within the recommended 10 mins. (Bottom picture)
I'm struggling to trust that these are both positive? Can I have some advise please?
I haven't told my partner anything as I'm worried it's wrong. 
Thanks x