Safest na pwede inumin ng possible pregnant is Paracetamol only to relieve the feeling of getting sick, but if your hesistant to take meds, you can try home remedies such as warm lemon honey, or warm ginger to loosen your congestion, stay hydrated and rest. If your period is delay, you can wait for at least 1 week to test for pregnancy. Because 4 days delay is too early to determine if your pregnant. But if you insist to try PT you may do so.
Elein Rose Delfin Apostol