Help, need advise 4 week 2 days pregnant and spotting!

Need help to calm myself. I'm worried. 4 weeks 2 days pregnant. Today just noticed spotting. In advance sorry TMI.... it was brown discharge twice today I seen when I went to use the bathroom. Then the third time I went to the BR i saw light pink spotting with egg white discharge. Some cramps today. Feels like my period is coming. I'm scared and want to know this is normal. Really want to make sure my baby is ok. I've been trying for a year and now that I know I'm pregnant could not be any happier but now super paranoid with these symptoms. This would be baby #2, disnt have these symptoms with no.1. Please help!