Let me rephrase the answer for you. Short Term Capital Losses can be adjusted with Short Term Capital Gains. Now in your case the first transaction is over. After 3 days you may enter into a new transaction. The Capital gains arising there is separate. That can be adjusted with Short Term Capital gains/Losses if (1) The transaction is short term in nature, (2) There exist STCG/STCL balance after adjustment.
Secondly, Long Term Capital Gains is exempt u/s 10(38). You cannot set-off the long term losses with Short Term or carry forward it nor adjust it with Other Long term Capital Gains arising in other Assets..
Hope that solves your query.