Temps are much lower this month in general?????

So I am knew to this forum as I don,t normally post but really confused as this was our last cycle trying before our wedding next year. If we don't conceive we have to wait until after the wedding next August to start trying again.

It's summer in the uk and everyone is really sweaty and hot and yet my temps have been much lower all the way through compared to the last 12 months of trying.

I miscarried back in January at 12 weeks and the cycles didn't settle again until April.

FF has said I got a definitive ovulation day still and I am on 7dpo. But I've had a really loose bowel today and cramps yesterday which are what I normally get when my period is about to show. My temp also dropped again yesterday and today still above cover line but from 36.9 to 36.7. I'm really hoping after having sex for 12 days straight across the entire ovulation time I am not going to just get an early period. I was really hoping this would be our month and a sticky one at that!!!!!