Irregular period after miscarriage 6 months ago.

I’ve had a miscarriage in jan’21, and had been trying to conceive. And went to TCM to 调整 (fix) the period window which I’m having like 40-41 days cycle since the MC. This round, I had random spotting since ytd and today another few spots. Should I try the pregnancy kit , or wait for a few days? The estimated based on 40-41 days cycle, is for period to start on 10 jul.