Welcome to HCM.
You ended period on 17th June and did protected sex with using condom on 19th June.
If your period was regular,then 2nd day just after period is not your fertile day or ovulation time. It is always safe period.
So Probability of pregnancy
is nil or very negligible. You can wait for next coming period. If missed,then do a home pregnancy test after 7 days to avoid your doubt.
Take Tab Drotin
DS to get relief from abdominal cramp
. Avoid stress
,drink plenty of water and sleep properly.