Hello,My wife made bedike at least 1x a day for first 6 days, most days second bedike before shkiye. On 7th day she made only 1 bedike in the morning. Turns out that it was about 30-40 minutes before nets, which is still well after alors and even good 20 minutes after misheyakir. She didn’t realize it was a too early and went to mikve. Is the bedike she made in morning of day 7 ok? Or does she have to make bedikes again tomorrow and go to mikve again?
A bedika after alos hashachar is acceptable. In general it should preferably be done after netz hachama.
Shiurei Shevet Halevi 196:4. This is also the opinion of Harav Elyashiv zt”l.