If you are concerned you may get your period, but it is not an actual
onat perishah, you are permitted to have physical contact since you still are
tehorah. You may wish to abstain from intercourse until your status is clarified. Alternatively, you can check for any bleeding (by wiping externally with a tissue –
not immediately after urinating) before engaging in intercourse. If the tissue is clear, you can go ahead with relations. If you find
staining on the tissue you are not
niddah; you can wait about 24 hours and try again.
There is no need to separate the
beds or observe
harchakot except when you are actually
niddah.
Please feel free to get back to us with any further questions.