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, cramps and spotting can be symptoms of early pregnancy
but none are specefic for it and not diagnostic at all.
Also since you have loose stools, frequent urination
also these symptoms can also be sugesstive of a gastrointestinal or gynaecologic infection though less likely since there is no associated fever
or burning urination or weaknessor loss of apetite.
If you have had unprotected intercourse
, then it is more likely due to a possible pregnancy and you can confirm it with a urine pregnancy test available in the market using preferably a fresh void morning sample of your urine.
If that is positive then please consult your gynaecologist for further confirmation and management.
Wishing you good health.