We are sorry to hear of your miscarriage.
The stain you saw on
toilet paper did not invalidate your
clean days, since you waited after urinating before wiping.
Ideally, one should perform daily
bedikot during the seven clean days. But if staining is making it difficult to get through the clean days, you may reduce the number of
bedikot performed to the
hefsek taharah, and one
bedikah each on day 1, day 7, and one of the intermediate clean days. Since you noticed you were staining, it was acceptable–and advisable–to hold off with the
bedikah that day. You did the right thing.
We also want to suggest you look into the
Tahor app, which can be very helpful for evaluating stains in a situation where there is no local halachic authority to whom you can turn.
Please feel free to get back to us with any further questions.
B’Hatzlacha!