Is this what the diabetes midwife meant?....

Hi Newby here,
I have recently had a preconception meeting with a diabetes midwife and had my coil removed. However it would appear that there is a possibility I could be pregnant. I did a test on Friday which was negative however I had drank 1.5ltr water that day. However my bloods are suddenly a real challenge. 1hr after meals I am verging on hypo and this is now happening all day every day. I have reduced my doses and I am still eating the same foods so I cannot understand why. I am going to re-test tomorrow as I have other symptoms (which I guess you can find anyway if you look hard enough). Is this possibly to do with pregnancy?
Thanksx

Thanks for that.
I am type 1 - insulin controlled and was diagnosed in September last year.
Last HBa1C 5.6% (I am very anal about blood control I guess)
It is really frustrating when I had such good control until last week when I suddenly keep getting very low and hypo. Even had a middle of the night hypo which has never happened.
I have reduced my dose already on the basis that it had happened more than a couple of times for the same meals (which I am perfectly happy with less insulin suits me)
Being fairly new to it all I just wondered if there was anything else that could cause me to keep consistenly going so low when I have had such good control until now.
Any advice is appreciated