When do pregnancy symptoms start?

Well I finally got my BFP after 5 months! We are very excited=) I am 4 weeks along and the only realy pregnancy symptom i have is being moody, i was wondering if it took a while for the symptoms to start and when did they start for all of you? I was also wondering if you have morning sickness is it more likley you will have a girl or is that just a myth i basically want to know if all the myths about being pregnant with a girl hold true to what they say or if it is just b.s.?